- Custom QR Code Generator with Logo & Style Suite
Generate high-resolution custom QR codes for URLs, WiFi, contact cards, and text with custom colors, dot styles, and vector export options (PNG/SVG).
- MD5 Hash Generator & Checksum Tool
Compute secure RFC 1321 MD5 hashes instantly from text strings, bulk multi-line inputs, or local files — 100% client-side with zero server transmission.
- SHA Hash Generator & Checksum Tool Suite
Generate SHA-1, SHA-256, SHA-512, and SHA-3 (256/512) hashes locally and securely. Verify checksums and analyze text or files entirely in-browser.
- Strong Password & Passphrase Generator
Build high-entropy random passwords or memorable multi-word passphrases using cryptographically secure CSPRNG random values with custom character sets.
- Password Strength Checker & Cracking Time Analyzer
Zero-Data Exposure: Evaluated 100% locally in your browser. No server calls, no network transmission.
- Exact Age Calculator & Chronological Milestone Suite
Calculate exact chronological age in years, months, weeks, days, and hours. Includes upcoming birthday countdowns and historical day-count milestones.
- Multi-Mode Percentage Calculator & Growth Suite
Calculate percentage changes, value distributions, markups, discounts, and reverse percentages instantly with dynamic step-by-step math breakdowns.
- Average Calculator — Mean, Median, Mode & Std Dev
Compute statistical Mean, Median, Mode, Range, Variance, and Standard Deviation for custom numeric datasets instantly with visual statistical summaries.
- Universal Text Case Converter & Capitalization Suite
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and PascalCase instantly with live word and character counts.
- Comma Separator & List Delimiter Converter
Transform column listings, spreadsheet rows, or tab data into clean comma-separated lists, SQL array inputs, or custom delimited strings instantly.
- Compare Two Lists & Set Difference Finder
Compare two text lists online to find missing items, set differences, intersections, and unfollowers from Instagram ZIP exports.
- Base64 Encoder / Decoder & String Sandbox
Encode plain text to Base64 or decode Base64 strings back to readable format instantly. Supports UTF-8 strings, line breaks, and live byte metrics locally in your browser.
- URL Encoder / Decoder & URI Sanitizer
Encode special characters into percent-encoded URI strings or decode encoded URLs back to human-readable paths in real time. 100% client-side web utility.
- HTML Entity Encoder / Decoder Suite
Convert special HTML characters (&, <, >, quotes) into secure HTML entities and decode numeric or named entities back into raw markup safely in real time.
- JSON Formatter, Validator & Viewer
A premium, secure client-side workbench to validate, beautify, compact, and inspect JSON data structures instantly.
- XML Formatter, Validator & Viewer
A premium, secure client-side workbench to format, validate, beautify, minify, and view XML documents locally and securely.
- JWT Decoder, Inspector & Payload Auditor
Decode JSON Web Tokens (JWT) locally to inspect header parameters, payload claims, and expiration timestamps without transmitting secret keys over the wire.
- Bulk UUID / GUID Generator
Generate single or bulk cryptographically secure UUID v4 and time-based UUID v1 identifiers.
- String to Hex & Hex to String Converter
Convert plain text strings to hexadecimal format and decode hex arrays back to readable text in real-time.
- Unix Timestamp Converter & Epoch Calculator
Convert Unix epoch timestamps to human-readable dates and vice versa with real-time live ticker, precision detection, and relative time calculations — all 100% client-side.
- Cron Expression Generator & Explainer
Generate and explain cron expressions with real-time human-readable translations, next execution dates, and custom schedulers.
- Reverse Text Generator & Character Flipper
Flip text strings backward, reverse word orders, mirror lines horizontally, or generate upside-down text transformations in real time.
- SQL Formatter & Query Beautifier
Format, beautify, validate, and minify SQL queries with multi-dialect support (Standard SQL, MySQL, PostgreSQL, T-SQL) — 100% client-side tokenization and parsing.
- Regex Tester, Explainer & Cheat Sheet
Test, debug, and explain regular expressions in real-time with native JavaScript RegExp engine, flag toggles, match highlighting, group captures, and a comprehensive syntax cheat sheet — 100% client-side.
- Diff Checker & Text Comparison Tool
Compare text differences with precision — line-by-line or character-by-character. Split and unified views with real-time performance metrics.
- Markdown to HTML Converter & Previewer
Convert Markdown to clean, semantic HTML instantly with a live preview. Pure TypeScript regex-based compiler — zero external dependencies, 100% client-side.
- HTML Formatter, Beautifier & Validator
Format, beautify, minify, and validate HTML markup instantly with pure client-side processing.
- CSS Formatter, Beautifier & Minifier
Format, beautify, and minify CSS code instantly with a pure TypeScript lexical tokenization engine — 100% client-side, zero external dependencies.
- JavaScript Formatter, Beautifier & Minifier
Format, beautify, and minify JavaScript code instantly with a pure TypeScript lexical tokenization engine — 100% client-side, zero external dependencies.
- JSON to CSV & CSV to JSON Converter
Convert JSON to CSV and CSV to JSON instantly with custom delimiters, nested object flattening, real-time reactive conversion, dynamic size metrics tracking, and drag-and-drop file ingestion — 100% client-side.
- HTML to Markdown & Markdown to HTML Suite
Convert HTML to Markdown and Markdown to HTML instantly with pure TypeScript DOMParser and regex-based conversion engines — 100% client-side, zero external dependencies.
- HTML & CSS Minifier & Unminifier
Minify, unminify, compress, and beautify HTML markup and CSS stylesheets instantly with pure TypeScript tokenization engines — 100% client-side, zero external dependencies.
- YAML to JSON & JSON to YAML Converter
Convert YAML to JSON and JSON to YAML instantly with beautify and minify modes. Pure TypeScript YAML parser and stringifier — 100% client-side, zero external dependencies.
- Meta Tag Generator & Social Preview Inspector
Generate SEO-optimized HTML meta tags, Open Graph properties, and Twitter Cards with live previews for Google, Facebook, & X. 100% client-side & secure.
- Open Graph Meta Tag Generator & Social Card Suite
Build Facebook, LinkedIn, and social media Open Graph tags. Preview rich card images, post titles, and descriptions prior to publishing.
- WHOIS Domain Age Checker & Expiration Auditor
Query live WHOIS registries to inspect domain creation dates, total active age, registrar information, expiration milestones, and trust metrics.
- Domain to IP Converter & DNS Inspector
Instantly resolve domain names into IPv4/IPv6 addresses, inspect A-records, ISP metadata, and server locations.
- IP Location Lookup & GeoIP Visualizer
Inspect IPv4/IPv6 locations, ASN telemetry, ISP network data, and interactive location maps.
- DNS Record Finder & Name Server Inspector
Instantly query and inspect live DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) across global resolvers with full TTL telemetry.
- SSL Certificate Checker
Check SSL certificate validity. Verify SSL/TLS certificate expiration dates, CA issuer trust chains, and security ciphers.
- HTTP Headers Inspector & Response Code Analyzer
Inspect HTTP response headers, check HTTP status codes, and analyze web security header policies.
- XML Sitemap Generator & URL Crawler Suite
Compile Sitemaps.org compliant XML, TXT, and HTML sitemaps for Google Search Console.
- Word Combiner & Phrase Generator
Combine word lists into custom phrase matrices, domain names, and SEO keyword permutations instantly.
- Small Text Generator & Unicode Font Styler
Convert text to Small Caps, Superscript, Subscript, and Unicode styles instantly.
- Article Rewriter & Text Paraphraser
Instantly rephrase prose, alter tone, and elevate article uniqueness with browser-based text transformation.
- Online Text Editor & Rich Formatting Sandbox
Rich text editing sandbox with real-time HTML view, case transformations, and document stats.
- RGB to Hex Converter
Convert RGB to Hex and Hex to RGB in real-time with alpha opacity support and color picking.
- Test Credit Card & Mock Identity Generator
Generate valid Luhn-checked test credit cards and complete mock identity profiles for gateway testing and sandbox environments.
- PNG to JPG & Format Converter Suite
Convert PNG images to JPG, WebP, or PNG with batch processing, custom transparency fill colors, and real-time canvas compression. 100% client-side execution.
- Image Compressor & Quality Optimizer
Batch compress and optimize PNG, JPG, WebP, and GIF assets locally in your browser. Fine-tune compression ratios, apply custom transparency fills, and scale pixel dimensions with zero server uploads.
- Favicon Generator & Multi-Resolution App Icon Suite
Generate standard browser favicons, Apple touch icons, and Android PWA manifest icon suites client-side.
- Vector SVG Converter & Rasterizer Suite
Convert SVG vector graphics to PNG, JPG, or WebP raster formats, or vectorize PNG/JPG images into clean SVG vectors with 100% client-side privacy.
- Next-Gen HEIC & AVIF Image Converter
Batch convert Apple HEIC, HEIF, and AVIF images to standard JPG or PNG formats instantly and securely in your browser with zero server uploads.
- AdSense Revenue Calculator
Estimate monthly Google AdSense earnings, click-through rates, and page RPM.
- Discount Calculator & Savings Suite
Calculate instant retail markdowns, stacked double discounts, post-tax subtotals, and reverse original list prices with precision.
- Master Unit Converter
Convert between various standard units of measurement including length, weight, temperature, area, volume, speed, and more.
- Probability Calculator & Event Odds Suite
Calculate single event odds, conditional joint probabilities, series repetitions, and binomial distribution PMF metrics.
- Sales Tax Calculator & Gross/Net Expense Suite
Calculate sales tax, reverse extract net prices from gross totals, and log multi-line expenses with US state tax presets.
- Compound Investment & Return Calculator
Calculate long-term compound growth, monthly contributions, and investment returns.
- Compound Interest & Growth Calculator
Calculate compound growth, regular contributions, APY yields, and inflation impact over time.
- Simple Interest & Loan Calculator
Compute simple interest, total payback balances, and generate clear payment breakdowns instantly.
- Mortgage Payment & Amortization Schedule
Calculate exact monthly mortgage payments, generate detailed amortization schedules, and evaluate the impact of extra payments.
- Unified Binary & Number Base Converter
Convert text, ASCII, decimal, octal, and hexadecimal values dynamically.
- Image Resizer & Pixel Dimensions Scaler
Batch scale pixel dimensions, lock aspect ratios, and optimize web graphics locally using high-performance browser canvas rendering.
- What Is My IP Address & Network Inspector
Check your public IPv4/IPv6 address, ISP details, geolocation, and connection security in real time.
- JPG to PDF Converter
Convert JPG, PNG, and WEBP images into a clean PDF document instantly with customizable margins and page sizes.
- Merge PDF & Document Joiner
Combine and join multiple PDF documents securely inside your browser.
- PDF Compressor & File Size Optimizer
100% Client-side PDF file size reduction suite with custom compression profiles.
- Organize & Split PDF Pages
Reorder, rotate, delete, split, and extract PDF pages with interactive client-side preview thumbnails.
- Lock PDF & Password Encryption
Encrypt PDF documents with 256-bit AES passwords and permission locks.
- Unlock PDF & Password Remover
Remove passwords and decrypt PDF files locally inside browser memory.
- Watermark PDF & Digital Stamp Tool
Apply text watermarks, logo stamps, and dynamic security patterns to PDF files client-side.
- Remove & Delete PDF Pages
Visually remove unwanted pages, delete ranges, and rebuild your PDF document instantly in browser.
- Grayscale PDF & Color Monochromatizer
Convert full-color PDF files into high-quality grayscale or monochromatic documents directly in browser.
- Word to PDF Converter
Convert Word (.docx) files to PDF format instantly inside your browser with complete privacy.
- PDF to Word Converter
Convert PDF files into editable Word (.docx) documents directly in your browser with complete privacy and zero server uploads.
- Text to PDF Converter
Convert plain text content into formatted, paginated PDF documents directly in browser memory.
- PNG to PDF Converter
Convert PNG images to PDF documents with full alpha transparency support and custom margins.
- Image to PDF Universal Converter
Convert JPG, PNG, and WEBP images into organized multi-page PDF documents locally in your browser.
- PDF to JPG High-Resolution Converter
Convert PDF document pages into high-resolution JPG images with custom DPI settings directly in your browser.
- PDF to PNG Converter
Convert PDF documents to high-resolution, transparent PNG images entirely in your browser.
- HTML to PDF Webpage Compiler
Compile HTML code and CSS into high-quality PDF documents locally in browser.
- PDF to ZIP Archive Packager
Package PDF document pages or extracted image graphics into compressed ZIP archives directly in your browser with zero server uploads.
- Rotate PDF Pages & Orientation Fixer
Fix inverted or landscape PDF pages with loss-free orientation correction.
- Add PDF Page Numbers & Header/Footer Stamps
Stamp custom page numbers, headers, and footers onto PDF pages with full alignment and font controls.
- Extract Images from PDF
Extract embedded raw images and photos from PDF files at full original resolution.
- PDF Metadata & Document Title Editor
Inspect, modify, or strip document titles, author details, keywords, and hidden tags in real-time.
- Crop PDF Pages & Margin Trimmer
Trim margins and crop custom PDF page areas instantly in your browser with zero server uploads.
- Reorder & Reverse PDF Pages
Organize PDF page sequences, reverse page order, or rotate individual pages.
- PDF to Plain Text Extractor
Extract plain text from PDF documents with high fidelity.
- PDF to Markdown Compiler
Convert PDF documents into clean, structured Markdown code with client-side layout recognition.
- Auto Loan & Monthly Payment Estimator
Calculate auto loan payments, trade-in tax credits, dealer fees, and amortization schedules.
- Loan Payoff & Debt Reduction Calculator
Calculate payoff timelines, interest savings, and lump-sum impact to accelerate debt elimination.
- Retirement Savings & Nest Egg Planner
Calculate projected retirement nest egg, employer match compounding, and 4% rule safe withdrawal rates.
- Inflation Rate & Purchasing Power Calculator
Calculate future money value, CPI decay, and real purchasing power erosion.
- ROI Calculator
Calculate simple ROI, annualized return (CAGR), net profit, and investment performance across stocks and real estate.
- Break-Even Point & Profitability Calculator
Calculate unit break-even points, contribution margins, and target profit volume.
- Margin & Markup Calculator
Calculate profit margin, markup percentage, gross selling price, and gross profit instantly.
- Salary & Hourly Paycheck Converter
Convert annual salary to hourly rate and calculate net take-home pay across bi-weekly, monthly, and weekly schedules.
- Net Worth & Personal Asset Calculator
Calculate total wealth, track personal asset categories, and assess debt-to-asset leverage in real time.
- Tip & Bill Splitter Calculator
Calculate tips, sales tax, and equal or itemized per-person group bill splits.
- BMI & Body Composition Calculator
Calculate BMI, ideal weight targets, estimated body fat %, BMR, and TDEE.
- Calorie & Daily Energy Expenditure (TDEE) Calculator
Calculate your Total Daily Energy Expenditure (TDEE), Basal Metabolic Rate (BMR), and custom caloric goals.
- Body Fat Percentage & Lean Mass Calculator
Calculate accurate body fat percentage, fat mass, lean body mass, and ideal target ranges.
- Water Intake & Daily Hydration Calculator
Calculate your optimal daily water intake based on body weight, exercise duration, climate zone, and physiological conditions.
- Ideal Body Weight Calculator
Calculate clinical ideal body weight using Devine, Robinson, Miller, and Hamwi formulas with healthy BMI ranges.
- Target Heart Rate Zone Calculator
Calculate personal target heart rate zones for fat loss, cardiovascular endurance, and athletic performance using Karvonen and Tanaka formulas.
- Macro Ratio & Flexible Dieting Calculator
Calculate accurate macro ratios (protein, carbs, fats) for fat loss, muscle gain, or ketogenic diets.
- Pregnancy Due Date & Conception Calculator
Calculate estimated pregnancy due date, conception window, trimester milestones, and gestational age using LMP, ultrasound, or IVF transfer dates.
- Ovulation & Fertile Window Calculator
Calculate ovulation days, peak fertile windows, next period, and conception schedules.
- Blood Alcohol Content (BAC) Calculator
Calculate estimated BAC percentage, metabolic clearance time, and impairment thresholds based on body weight and drinks consumed.
- Pace, Distance & Running Time Calculator
Calculate running pace, race finish time, splits, and distance with imperial and metric support.
- Scientific Calculator & Function Suite
Perform complex scientific computations, trigonometric operations, and formula evaluations with zero latency.
- Fraction Calculator & Simplifier
Perform fraction arithmetic (addition, subtraction, multiplication, division) and simplification with full step-by-step explanations.
- Ratio & Proportion Calculator
Solve proportion equations (solve for X), simplify ratios, scale recipe factors, and partition total values.
- Standard Deviation & Variance Calculator
Compute sample and population standard deviation, variance, mean, sum of squares, and step-by-step statistical derivations.
- Permutation & Combination Calculator
Calculate permutations (nPr) and combinations (nCr) with exact BigInt precision, step-by-step math derivations, and repetition toggles.
- Quadratic Equation Solver & Visualizer
Solve quadratic equations instantly with real and complex roots, discriminant analysis, vertex details, and interactive 2D parabola graph visualization.
- Matrix Mathematics & Determinant Calculator
Solve determinants, matrix inversions, transpositions, and scalar multiplication with step-by-step proofs.
- Exponential Growth & Decay Calculator
Calculate discrete and continuous exponential growth, decay, doubling time, half-life, and timeline trajectories.
- GPA & Grade Point Average Calculator
Calculate semester and cumulative GPA with 4.0, 4.3, and 5.0 weighted scales and target planning.
- Grade & Exam Score Needed Calculator
Calculate the exact score needed on your final exam to reach your target class grade.
- URL & Hyperlink Text Extractor
Extract URLs and anchor text from HTML or plain text with deduplication and export capabilities.
- Bulk Multi-URL Opener & Launch Sandbox
Sanitize, deduplicate, throttle, and launch large batches of website URLs across isolated browser tabs simultaneously.
- Email Address Extractor & Scraper
Extract, clean, filter, and sort email addresses instantly from raw text, code logs, or unstructured documents.
- Phone Number Extractor & Formatter
Extract, deduplicate, and format phone numbers from raw text into E.164 or US national formats.
- Duplicate Line Remover & Deduplicator
Scrub duplicate text lines, trim whitespace, filter empty lines, and sort lists safely.
- Line Alphabetizer & Sort Suite
Sort, deduplicate, trim, and format line-delimited text instantly.
- Text Line Counter & Blank Line Stripper
Count total lines, strip blank lines, deduplicate entries, trim whitespace, and sort text lists online in real-time.
- String Length & Word Count Analyzer
Calculate real-time word count, character limits, reading time, and keyword density.
- Character Frequency & Density Analyzer
Analyze letter occurrence counts, character density percentages, and symbol frequencies in real time.
- Reading Time & Speaking Pace Estimator
Calculate silent reading time and speech delivery duration with custom WPM speeds and text analytics.
- Text Replace & Pattern Substitution Tool
Batch replace text, execute complex Regex patterns, and clean string data instantly.
- Prefix and Suffix Text Attacher
Prepend and append custom text, tags, code syntax, or line numbers to each line of text instantly in your browser.
- Slugify & URL Slug Generator
Convert titles and text into clean, SEO-friendly URL permalinks with custom separators and casing rules.
- Random String & Hash Key Generator
Generate cryptographically secure CSPRNG random strings, API secret keys, and mapped cryptographic hash digests on demand.
- Lorem Ipsum Generator
Generate customizable placeholder text in paragraphs, sentences, or words with multiple themes including Latin, Hipster, Pirate, and Tech.
- Fake Word & Nonsense Vocabulary Generator
Generate unique pseudowords, brand names, and nonsense vocabulary with custom phonetics and JSON/CSV export.
- Text Encryption & Decryption Suite (AES / Caesar)
Browser-native text encryption suite featuring AES-256-GCM and classical Caesar shift ciphers.
- Morse Code Translator & Audio Synthesizer
Real-time Morse code translator with Web Audio tone playback, customizable WPM speed, pitch frequency controls, and PARIS timing standard.
- NATO Phonetic Alphabet Converter
Convert text to standard ICAO/NATO phonetic alphabet codewords with native audio voice playback and pronunciation guides.
- Zalgo Glitch Text Generator
Corrupt text with Unicode combining diacritical marks and adjust glitch intensity.
- Strikethrough & Underline Font Styler
Generate cross-platform strikethrough, underline, and overline text styles using native Unicode combining characters.
- Days Between Dates & Span Calculator
Calculate exact days between dates, working business days, total weeks, and perform date addition or subtraction.
- Time Duration & Hour Counter
Calculate exact days between dates, net business working days, and perform date addition or subtraction in real-time.
- World Clock & Timezone Converter Matrix
Convert live and scheduled time across multiple international time zones simultaneously.
- Leap Year Checker & Calendar Auditor
Instantly verify leap years, century leap year rules, solar year deviations, and calendar range audits.
- Day of the Week Calculator
Determine the exact day of the week for any past, present, or future calendar date instantly.
- Week Number Calculator (ISO-8601)
Calculate ISO-8601 week numbers, week date ranges, and annual week metrics.
- Event Countdown Timer Generator
Create customizable, embeddable countdown timers for launches, sales, and events.
- Sunrise & Sunset Time Estimator
Calculate accurate sunrise, sunset, twilight phases, golden hour, and daylight duration for any coordinates.
- Moon Phase Calendar & Visualizer
Calculate accurate lunar phases, illumination percentages, moon age, distance, and monthly lunar calendar views.
- Coin Flipper & Probability Simulator
3D interactive coin flipper and high-speed Monte Carlo probability batch simulator backed by Web Crypto API entropy.
- Dice Roller & Multi-Die Simulator
Cryptographically secure polyhedral dice roller with modifiers, drop rules, and session history.
- Random Number Generator & Range Picker
Cryptographically secure random number engine with custom range bounds, non-repeating filters, and statistical analytics.
- Random Name Picker & Winner Selector
Pick random winners securely with Web Crypto API entropy and slot-machine animations.
- Spin the Wheel & Choice Picker
Interactive HTML5 wheel spinner for fair random decisions, giveaway drawings, and weighted choices.
- Random Team & Group Generator
Split rosters into fair, randomized teams or groups instantly with optional skill balancing and Web Crypto RNG.
- Playing Card Shuffler & Hand Generator
Simulate fair, cryptographically secure 52-card deck shuffles and draw hands with real-time poker evaluation and statistical analytics.
- Random Color & Palette Generator
Generate harmonious color schemes, random HEX/RGB/HSL palettes, and evaluate WCAG contrast ratios with hardware cryptographic entropy.
- Random Address & Location Picker
Generate authentic mock addresses, postal regions, and bounded GPS coordinates across international territories for QA and testing.
- Random Country & Flag Quiz Generator
Generate random sovereign nations, display official flags and country factsheets, or challenge yourself in interactive flag and capital quiz modes.
- Color Picker & Contrast Checker (WCAG)
Inspect color contrast ratios against WCAG 2.1 and Section 508 accessibility guidelines with live HSL/RGB sliders and color vision deficiency simulations.
- CSS Box Shadow & Glow Generator
Design multi-layer CSS box shadows, inset depth, neumorphism, and neon glow effects with instant Tailwind CSS and React export.
- CSS Gradient Generator
Design and export CSS linear, radial, and conic gradients with Tailwind support and 1080p image exports.
- CSS Border Radius & Clip-Path Generator
Visual 8-point organic blob creator, complex corner radius generator, and CSS polygon clip-path builder with instant Tailwind and cross-browser CSS export.
- CSS Flexbox Layout Sandbox
Visual interactive Flexbox layout builder and real-time CSS/Tailwind generator.
- CSS Grid Generator & Interactive Builder
Design responsive 2D layouts visually with fractional tracks, minmax constraints, and instant CSS/Tailwind export.
- CSS Triangle & Polygon Generator
Interactive pure CSS border triangle and CSS3 clip-path polygon generator with draggable vertices.
- HTML Table Code Generator
Visual responsive HTML table generator and editor with CSS, Tailwind, and Markdown export.
- HTACCESS Directives & Rewrite Rules Generator
Generate production-ready Apache .htaccess rules with 301 redirects, HTTPS enforcement, GZIP compression, and security hardening headers.
- Robots.txt Generator & Validator
Generate RFC 9309 compliant robots.txt files, block AI scrapers, and test crawl URL paths in real time.
- User-Agent String Parser & Inspector
Decode browser versions, operating systems, hardware architecture, layout engines, and AI bot crawlers from HTTP User-Agent strings.
- Screen Resolution & Aspect Ratio Calculator
Calculate display aspect ratios, custom dimension scaling, PPI density, and responsive CSS snippets.
- Pixels to REM / EM Converter
Convert Pixels (px) to REM, EM, Percentages, and Tailwind CSS spacing units in real time with batch stylesheet parsing.
- Keycode & Keyboard Event Inspector
Inspect JavaScript KeyboardEvent attributes in real-time including event.key, event.code, which, location, and generate ready-to-use event handler snippets.
- Chmod Permissions Calculator & Generator
Calculate Linux and Unix chmod permissions visually with octal, symbolic, and binary conversions, SetUID/SetGID/Sticky bit support, and terminal command generation.
- APY to APR & Compound Yield Calculator
Convert APY to APR and APR to APY instantly across all compounding intervals with dollar yield schedules.
- Credit Card Payoff Calculator
Simulate credit card payoff schedules, compare minimum payments vs accelerated plans, and calculate interest savings.
- Down Payment Savings & Timeline Planner
Calculate down payment targets, savings timelines, HYSA compound growth, and closing cost requirements.
- Emergency Fund & Monthly Expense Buffer Calculator
Calculate your ideal emergency savings buffer, bare-bones survival expenses, and monthly runway.
- Car Lease vs Buy Calculator
Compare car leasing vs buying loan costs, depreciation, residual equity, and monthly cashflows.
- Subscription Audit & Annual Expense Aggregator
Audit recurring SaaS, streaming, and membership subscriptions. Calculate total annual cost leaks, category distributions, and compound investment opportunity costs.
- Freelance Hourly Billing Rate & Overhead Calculator
Calculate sustainable hourly rates, day rates, monthly retainers, tax reserves, and overhead costs.
- Home Rent vs Buy Break-Even Calculator
Compare total homeownership costs against renting and index fund investing to find your exact wealth break-even year.
- Fuel Trip Cost & Mileage Expense Estimator
Calculate driving expenses, road trip gas budgets, group splits, and IRS standard mileage deductions with live unit and currency conversions.
- Electricity Appliance Running Cost & kWh Estimator
Calculate appliance running costs, kilowatt-hour consumption, and annual utility bill impact with custom electricity tariffs and multi-device auditing.
- Unit Price & Grocery Bulk Savings Comparator
Compare cost per ounce, gram, pound, liter, and count across multiple grocery sizes, multipacks, and bulk deals to identify authentic savings.
- Coffee Savings & Compounding Habit Planner
Calculate how skipping daily coffee or small micro-expenses compounds into massive long-term wealth over time.
- Rule of 72 Investment Doubling Time Calculator
Calculate exact investment doubling times, compare Rule of 72 vs exact formulas, and analyze inflation drag.
- Refinance Break-Even & Interest Savings Calculator
Calculate break-even timelines in months, evaluate monthly payment reductions, and compare lifetime interest savings for mortgage refinances.
- Daily Steps to Distance, Miles & Calories Converter
Convert daily pedometer steps into miles, kilometers, active duration, and calories burned using MET energy formulas.
- Sleep Cycle & REM Bedtime Calculator
Calculate optimal bedtime schedules and wake-up times synced to 90-minute REM sleep cycles.
- Intermittent Fasting Window & Meal Schedule Tracker
Calculate custom fasting and eating windows, meal timing schedules, hydration targets, and metabolic autophagy stages.
- Caffeine Half-Life & Sleep Disruption Estimator
Calculate caffeine elimination decay, bedtime bloodstream retention, and optimal intake cutoff times.
- One Rep Max (1RM) Strength & Submax Weight Estimator
Calculate your 1RM, strength-to-bodyweight ratio, and complete percentage training zones across 7 scientific formulas.
- Running Split Times & Race Finish Pace Estimator
Calculate race split milestones, negative split pacing, marathon finish projections, and heart rate training zones.
- Target VO2 Max & Cardiovascular Fitness Estimator
Calculate VO2 max, aerobic fitness percentiles, MET capacity, and Karvonen heart rate zones.
- Lean Body Mass (LBM) Boer & James Formula Calculator
Calculate accurate Lean Body Mass (LBM), fat mass, Fat-Free Mass Index (FFMI), and Katch-McArdle BMR using clinical Boer, James, and Hume formulas.
- Calorie Deficit & Target Weight Loss Date Estimator
Calculate daily calorie budgets, energy deficits, and milestone completion dates using Mifflin-St Jeor TDEE precision.
- Quit Smoking Savings & Health Recovery Timeline Calculator
Calculate personal money saved, cigarettes avoided, life expectancy regained, and WHO clinical health recovery milestones after quitting smoking.
- Dog Age to Human Years Biological Converter
Calculate biological canine age into human equivalents using Epigenetic DNA methylation and AVMA breed size metrics.
- Cat Age to Human Years Feline Maturity Estimator
Calculate your cat's exact equivalent human age, feline life stage classification, and veterinary wellness schedule based on AAFP standards.
- Pet Daily Caloric Requirement (RER/MER) Calculator
Calculate clinical Resting Energy (RER) and Maintenance Energy (MER) for dogs and cats using WSAVA formulas.
- Recipe Ingredient Scaling & Baker's Percentage Adjuster
Scale recipes by portion yields, baker's percentages, or baking pan volume adjustments with real-time dough hydration analytics.
- Baking Pan Size & Volume Ratio Converter
Calculate exact area ratios, volume capacities, ingredient scaling, and baking adjustments across round, square, rectangular, bundt, and loaf pans.
- Air Fryer Time & Oven Temperature Conversion Matrix
Convert conventional and convection oven cooking times and temperatures into precise air fryer settings with customized time reduction and halfway shake alerts.
- Meat Roasting & Internal Cooking Temperature Guide
Calculate exact roasting times, internal thermometer pull temperatures, carryover heat, and dinner schedules for beef, poultry, pork, and lamb.
- Yeast & Sourdough Hydration Percentage Calculator
Enterprise baker's percentage and sourdough hydration calculator with levain flour-water breakdown and loaf batch scaling.
- Wall Paint Coverage & Gallon Volume Estimator
Calculate exact paint gallons, liters, wall square footage, and project costs with custom window and door cutouts.
- Flooring & Tile Area Square Footage Estimator
Calculate square footage, pattern cut waste, total tile units, and box counts for home remodeling projects.
- Wallpaper Roll Count & Pattern Repeat Calculator
Calculate exact wallpaper rolls, pattern repeat waste margins, strip cut yields, and room budgets.
- Mulch, Soil & Gravel Cubic Yard Estimator
Calculate cubic yards, tons, and bags for mulch, soil, gravel, and sand with bulk vs bagged cost comparisons.
- Concrete Slab & Footing Volume Estimator
Calculate cubic yards, cubic meters, ready-mix truck loads, and pre-mix bag quantities for slabs, footings, and piers.
- Lawn Grass Seed & Fertilizer Spreading Rate Calculator
Calculate exact grass seed pounds, N-P-K fertilizer spreading rates, bag quantities, and cross-hatch spreader calibrations for cool and warm season turfgrass.
- Aquarium Volume & Water Weight Calculator
Calculate true net water volume, filled glass weight, substrate displacement, and floor load pressure.
- Plant Watering & Pot Volume Calculator
Calculate exact watering schedules and container soil volumes tailored to houseplant species, pot material porosity, sunlight levels, and ambient humidity.
- Solar Panel Array & Daily kWh Yield Estimator
Calculate solar photovoltaic panel output, daily and annual kWh yields, roof surface area requirements, carbon offsets, and estimated utility bill savings.
- Triangle Area, Hypotenuse & Law of Cosines Solver
Solve SSS, SAS, ASA, AAS, SSA, and right triangles with live SVG geometry plotting and trigonometric proofs.
- Circle Circumference, Arc Length & Sector Area Calculator
Solve circle radius, circumference, area, arc length, chord, and sector parameters with real-time vector visualization.
- Cylinder, Cone & Sphere Volume and Surface Area Calculator
Comprehensive 3D solid geometry engine computing volume, lateral surface area, total surface area, slant height, base circumference, and liquid capacity with real-time SVG rendering.
- Pythagorean Theorem & Distance Formula Calculator
Solve right triangle hypotenuse, legs, area, perimeter, and compute 2D/3D Euclidean coordinate distances with radical simplification.
- Density, Mass & Volume Physical State Calculator
Calculate density, mass, and volume with 40+ material presets, specific gravity, and buoyancy simulation.
- Velocity, Acceleration & Stopping Distance Calculator
Kinematic stopping distance, deceleration G-force, and reaction time solver with road friction and grade slope modeling.
- Heat Index, Humidity & Real-Feel Temperature Estimator
Calculate NOAA apparent heat index, Canadian Humidex, dew point, and thermal stress danger categories.
- Wind Chill Factor & Frostbite Risk Estimator
Calculate feels-like wind chill temperature, convective skin heat loss rates, and frostbite risk windows.
- Dew Point & Relative Humidity Equilibrium Calculator
Calculate equilibrium dew point, relative humidity, vapor pressure deficit (VPD), absolute humidity, enthalpy, and condensation thresholds.
- Sound Decibel (dB) Distance & Attenuation Calculator
Compute decibel attenuation (dB SPL), sound intensity, pressure in Pascals, and OSHA noise exposure limits across distances.
- Lightning Distance & Thunder Storm Delay Calculator
Calculate lightning strike distance from thunder delay with live stopwatch, temperature sound speed tuning, and 30/30 storm safety protocols.
- Carbon Footprint Flight & Commute Emissions Estimator
Calculate greenhouse gas emissions for airline flights and daily vehicle or public transit commutes with rigorous DEFRA and IPCC scientific factors.
- Pomodoro Interval Timer & Work Sprint Visualizer
Circadian focus sprint intervals, task batching, and flow state ergonomics.
- Meeting Overlap & Multi-Timezone Scheduler
Find perfect cross-timezone meeting overlaps, schedule remote team calls across international working hours, and export ICS calendar invites.
- Employee Timesheet & Overtime Pay Calculator
Calculate daily and weekly work hours, lunch break deductions, overtime (1.5x), California double time (2.0x), and export payroll CSVs.
- Work Hours to Full-Time Equivalent (FTE) Calculator
Calculate Full-Time Equivalent (FTE) metrics from aggregate hours, part-time employee schedules, and department payroll rosters.
- Solar Noon, Solar Zenith & Sun Path Angle Estimator
High-precision solar position, solar culmination, solar zenith angle, azimuth, and sun path calculator using standard NOAA astronomical algorithms.
- Julian Day & Astronomical Modified Julian Date Converter
Convert between calendar dates, Julian Day (JD), Modified Julian Date (MJD), Reduced Julian Date (RJD), and Sidereal Time (GMST) with precision astronomical epoch calculations.
- Habit Tracker Streak & Target Goal Probability Calculator
Scientific habit streak calculator and target goal probability engine based on UCL automaticity research and binomial consistency modeling.
- Bill Due Date & Recurring Cycle Schedule Calculator
Forecast future bill due dates, weekend business-day shifts, and annualized cash flow for subscriptions and recurring payments.
- School Semester & College Graduation Date Estimator
Calculate your college graduation date, semester roadmap, remaining credits, and degree completion timeline across semester, quarter, and trimester academic systems.
- Next Solar & Lunar Eclipse Visibility Explorer
Interactive astronomical trajectory explorer for upcoming solar and lunar eclipses, totality paths, and visibility zones.
- Markdown Table Generator & Visual Spreadsheet Exporter
Interactive visual spreadsheet editor to build, align, and export clean Markdown, CSV, TSV, HTML, and JSON tables.
- Text to ASCII Art & Banner Typography Generator
Generate multi-line ASCII banner typography, FIGlet lettering, Unicode fonts, and framed comment blocks with real-time preview.
- Text Anonymizer & PII Redactor
Client-side PII sanitizer and text anonymizer to scrub emails, SSNs, credit cards, IPs, and API secrets before LLM ingestion.
- Title Case Converter for Capitalization Standards
Convert headlines and titles into APA 7th, Chicago Manual of Style, MLA 9th, and AP guidelines with brand case preservation.
- Invisible Whitespace & Zero-Width Space Cleaner
Detect, visualize, and strip hidden Unicode characters, zero-width spaces, BOM markers, and BiDi overrides in real time.
- Text Column Extraction & CSV Delimiter Splitter
Extract specific column indexes, split custom CSV/TSV delimiters, and convert tabular data to JSON, SQL, or clean CSV.
- Line Number Adder & Source Code Formatter
Add customizable line numbers, zero-padding, custom delimiters, hex offsets, and formatting prefixes to source code and text listings.
- Plain Text to Single-Line Minifier
Condense multi-line text, SQL queries, and code blocks into compact single-line strings with custom delimiters.
- Subscript & Superscript Unicode Formatter
Convert regular text, mathematical exponents, and chemical formulas into universal Unicode sub and superscripts.
- Text Syllable Counter & Lexical Density Analyzer
Calculate exact syllable counts, lexical density percentages, and readability grades with interactive phonetic breakdowns.
- Readability Score Calculator
Calculate Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog, and readability indices in real time.
- Secret Santa & Holiday Gift Exchange Matcher
Generate fair, collision-free Secret Santa pairings with custom exclusions, budget limits, wishlists, and private reveal cards.
- Random List Randomizer & Array Shuffler
Cryptographically secure item shuffler, list randomizer, and array order generator utilizing modern Fisher-Yates algorithms and Web Crypto API hardware entropy.
- Random Letter & Alphabet Picker
Generate unbiased random letters from multiple international alphabets or custom character pools with replacement controls.
- Tournament Bracket & Seeding Generator
Generate customizable tournament brackets with cryptographic random shuffling, ranked seeding, automatic bye calculations, and interactive match score tracking.
- Truth or Dare Card Prompt Generator
Interactive, browser-native Truth or Dare card generator with curated game modes, custom deck creator, and player turn tracker.
- Would You Rather Dilemma & Debate Card Generator
Interactive dilemma generator with live community vote percentages, 15-second lightning debate timers, and custom dilemma creators across 8 themes.
- Random Writing Prompt & Story Hook Generator
Generate narrative writing prompts, deep character dilemmas, opening line hooks, and unexpected story twists across all literary genres.
- Lottery Number Picker & Multi-Ball Draw Simulator
Cryptographically secure lottery quick pick generator and multi-ball draw simulator for US Powerball, Mega Millions, EuroMillions, and custom games.
- Random Emoji & Emoticon Combination Generator
Generate randomized emoji strings, Kaomoji Japanese emoticons, and aesthetic text palettes with custom delimiters and Unicode exports.
- Charades & Game Night Word Generator
Generate dynamic random ideas for Charades and party drawing games with round timers and team scoreboard.
- Random Time & Hour Generator
Generate cryptographically secure random times, timestamps, and clock hours with customizable ranges and formatting.
- Aspect Ratio Scaler & Missing Dimension Calculator
Calculate missing dimensions, scale image proportions without distortion, and convert between standard display ratios.
- Image Color Palette & Dominant Hex Extractor
Extract dominant colors, calculate hex, RGB, HSL, and CMYK swatches, sample pixels with interactive eyedropper, and export design palettes.
- SVG Path Visualizer & Anchor Point Inspector
Deconstruct SVG path commands, inspect Bézier handles, and verify anchor coordinates in real time.
- SVG to Pure CSS Background Code Formatter
Convert, optimize, and encode raw SVG markup into zero-latency CSS background Data URIs and Tailwind classes.
- SVG to React JSX Functional Component Converter
Convert raw SVG vector files into optimized, production-ready React JSX and TypeScript TSX functional components.
- Base64 to Image Decoder & Instant PNG/JPG Exporter
Decode base64 strings and data URIs into high-resolution PNG, JPG, or WebP files.
- Image to Base64 String Data URI Encoder
Convert PNG, JPG, WebP, SVG, and GIF images into RFC 4648 Base64 strings and Data URIs with zero server uploads.
- Image DPI to Physical Print Dimension Calculator
Calculate exact physical print dimensions from pixel resolution and DPI, with prepress paper presets and viewing distance acuity modeling.
- Canvas Color Gradient Generator & High-Res PNG Exporter
Design custom linear, radial, and conic color gradients with multi-stop color distribution and export crystal-clear PNG wallpapers in up to 4K resolution natively in your browser.
- Responsive CSS Clamp() & Fluid Typography Calculator
Calculate precision fluid typography and dynamic CSS clamp() linear interpolation rules with live preview.
- CSS Glassmorphism & Backdrop Blur Generator
Generate modern frosted glassmorphism CSS and Tailwind utilities with real-time backdrop-filter previews.
- CSS Neumorphism Soft UI Generator
Interactive Soft UI and Neumorphism CSS generator. Design extruded surfaces, convex shapes, and dual-shadow physics with CSS and Tailwind output.
- Tailwind CSS Color Palette Generator & Config Exporter
Generate harmonious 11-stop color scales and export configuration code for Tailwind CSS v3, v4 @theme, and CSS custom properties.
- CSS Keyframe Animation Visualizer & Code Exporter
Visual CSS keyframe generator and timeline animator. Create 60 FPS GPU-accelerated keyframe rules with pure CSS and Tailwind config exports.
- JSON Schema Generator from Mock JSON Data
Convert raw JSON documents into Draft-07 or Draft 2020-12 validation schemas automatically.
- JSON to TypeScript Interface Generator
Convert raw JSON sample documents into clean, production-ready TypeScript interfaces and type definitions instantly.
- BCRYPT Password Hash Generator & Salt Verifier
Client-side Blowfish key-derivation engine with real-time salt breakdown and constant-time equality check.
- Subnet Mask & IPv4 CIDR Range Calculator
Calculate IPv4 network ranges, broadcast addresses, usable IP spans, wildcard masks, and VLSM subnets client-side.
- IPv6 to IPv4 & Hexadecimal Address Expander
Enterprise-grade IPv6 address expander, RFC 5952 compressor, IPv4-mapped address extractor, 128-bit binary visualizer, and ip6.arpa reverse DNS PTR generator.
- URL Query Parameter Parser & Object Builder
Parse, edit, inspect, and transform URL query strings into JSON, TypeScript interfaces, and encoded URLs client-side.
- Content Security Policy (CSP) Header Generator
Generate hardened Content Security Policy Level 3 headers with presets for Next.js, WordPress, and zero-trust security.
- Optical Character Recognition (OCR) Image to Text Extractor
Convert images, scanned documents, and receipts into editable text in your browser.
- Image Color Inverter & Negative Filter
Browser-native tool to invert image colors, reverse photographic negatives, and apply Sabattier solarization effects.
- PNG Transparent Pixel Padding & Border Expander
Add transparent margins and custom pixel borders to PNGs with real-time preview and lossless output.
- SVG Path Minifier & Coordinate Precision Reducer
High-performance browser-native SVG path optimizer. Reduce coordinate decimal precision, collapse delimiters, and strip redundant whitespace.
- Pixel Art Sprite Scaler & Nearest-Neighbor Resizer
Upscale retro pixel art and sprites up to 32x with razor-sharp nearest-neighbor rendering and zero blur.
- Image Metadata & EXIF Tag Stripper
Scrub EXIF metadata, GPS coordinates, camera hardware models, and personal timestamps directly in the client browser with zero server uploads.
