Browse all online tools
Explore 176 free browser-based tools for text, development, calculations, images, and everyday work. No registration is required.
Start with these practical tools
All tools by category
Text (18)
Word Counter Count words, characters, sentences, and paragraphs Case Converter Convert text between different case formats Lorem Ipsum Generator Generate placeholder text for designs Markdown Editor Write and preview Markdown in real-time Diff Checker Compare two texts and highlight differences Remove Duplicates Remove duplicate lines from text Sort Text Lines Sort text lines alphabetically or numerically Text to Slug Convert text into SEO-friendly URL slugs Text Reverser Reverse text, word order, or each word Text Statistics Analyze word frequency, reading time, and more Repeat Text Generator Repeat text with separators and numbering Line Counter Count lines with blank and comment detection Join/Split Text Join lines with delimiter or split by delimiter Word Scrambler Scramble letters in words (Cambridge effect) Syllable Counter Count syllables and check haiku format Readability Checker Test reading level with 5 formulas Morse Code Converter Encode/decode Morse code with audio playback Phone Number Formatter Parse, validate and format phone numbers
Developer (39)
JSON Formatter Format, validate, and beautify JSON data Base64 Encoder/Decoder Encode text to Base64 or decode Base64 to text. Supports UTF-8. URL Encoder/Decoder Encode or decode URLs and URL parameters. Fast, private, and easy to use. Regex Tester Test and debug regular expressions Hash Generator Generate MD5, SHA-1, SHA-256, SHA-512 hashes Color Picker Pick colors and convert HEX, RGB, HSL YAML to JSON Converter Convert between YAML and JSON formats QR Code Generator Generate QR codes for text, URLs, WiFi Timestamp Converter Convert between Unix timestamps and dates UUID Generator Generate random UUIDs (v4) Cron Expression Generator Generate and understand cron schedules Cron Next Run Calculator See the next run times of a cron expression Number Base Converter Convert between binary, octal, decimal, hex HTML Encoder/Decoder Encode and decode HTML entities CSS Minifier/Formatter Minify or beautify CSS code JS/HTML Formatter Beautify JavaScript or HTML code Random Number Generator Generate random numbers with custom options JWT Decoder Decode and inspect JSON Web Tokens CSS Gradient Generator Create beautiful CSS gradients visually SQL Formatter Beautify and minify SQL queries with customizable keyword case and indentation options. MIME Type Lookup Look up MIME types by extension HTTP Status Reference Browse HTTP status codes (1xx-5xx) Leet Speak Converter Convert text to/from 1337 speak Meta Tag Generator Generate SEO Open Graph and Twitter meta tags UUID / ULID Decoder Parse UUID versions and ULID timestamps HTML Table Generator Visually build HTML tables with CSS URL Parser Parse URLs into components User Agent Parser Identify browser, OS, and device JSON Schema Generator Infer JSON Schema from data Test Data Generator Generate fake names, emails, addresses XML Formatter Format, minify, validate XML JSON to TypeScript Convert JSON into TypeScript interfaces Chmod Calculator Convert Unix permissions between octal, symbolic and chmod notation cURL Converter Convert cURL commands to fetch, axios, or Python code Random String Generator Generate random strings with custom character sets XML Sitemap Generator Generate a valid XML sitemap from a URL list Keycode Finder Press any key to see its event.key, code, and legacy keyCode values JWT Encoder Create and sign HS256 JSON Web Tokens locally Robots.txt Generator Build a robots.txt file visually with per-crawler rules
Network (4)
Security (3)
Calculator (7)
Unit Converter Convert between different units of measurement Percentage Calculator Calculate percentages, changes, and ratios Loan Calculator Calculate mortgage and loan payments Age Calculator Calculate exact age, zodiac, next birthday Date Calculator Days between dates, date arithmetic GPA Calculator Calculate weighted GPA on a 4.0 scale Grade Calculator Weighted grade average and required final exam score
Image (11)
Lorem Image Generator Generate placeholder images with custom sizes Image Compressor Compress and resize images in-browser Favicon Generator Generate multi-size favicon PNGs EXIF Metadata Viewer View camera/GPS data from photos Image to Base64 Convert images to data URIs QR Code Reader Decode QR codes from images Image Format Converter Convert images between PNG, JPEG, and WebP SVG to PNG Converter Convert SVG graphics to PNG images in your browser Image Cropper Crop, rotate, and flip images in-browser Image Color Extractor Extract a dominant color palette from any image Image Resizer Resize images by dimensions or percentage with presets
Media (2)
Math (10)
Average Calculator Calculate mean, median, mode, and more Prime Number Tools Check primality and find prime factors GCD/LCM Calculator Greatest Common Divisor and Least Common Multiple Roman Numeral Converter Convert between Arabic and Roman numerals Tip Calculator Calculate tips and split bills Scientific Calculator Advanced calculator with trig, log, factorial Aspect Ratio Calculator Simplify ratios and solve missing dimensions Fraction Calculator Add, subtract, multiply, and divide fractions Triangle Calculator Solve triangles from SSS, SAS, ASA, or SSA inputs Time Calculator Add/subtract durations and find time between two clock times
Converter (3)
Finance (9)
Currency Converter Convert between 30+ world currencies Compound Interest Calculate compound interest growth Sales Tax Calculator Calculate tax by US state or custom rate ROI Calculator Return on investment + CAGR Discount Calculator Calculate sale price and savings Salary Converter Convert gross pay between hourly, daily, weekly, monthly, and annual rates Stock Profit Calculator Realized P/L with fees, ROI, and break-even sell price Fuel Cost Calculator Estimate trip fuel cost or measure real consumption VAT Calculator Add or remove VAT with UK/DE/FR/EU rate presets or a custom rate
Design (11)
Color Contrast Checker Check WCAG AA/AAA contrast compliance Color Palette Generator Generate harmonious color schemes Color Name Finder Find CSS color names from HEX CSS Box Shadow Generator Design layered CSS box shadows visually with live preview CSS Flexbox Generator Design flexbox layouts visually and copy the generated CSS Border Radius Generator Design rounded corners visually, including elliptical radii Cubic Bezier Generator Design CSS easing curves with a draggable bezier editor Text Shadow Generator Design layered CSS text shadows visually with live preview CSS Grid Generator Design CSS grid layouts visually and copy the generated CSS Random Color Generator Generate random colors with HEX, RGB and HSL values Px to Rem Converter Convert px to rem/em and back with a configurable base font size
Data (8)
CSV Viewer & Editor View, edit, sort CSV data in a table JSON Visualizer Tree/table view of JSON data JSON to CSV Convert JSON arrays to CSV format Markdown Table Generate markdown format tables JSON Diff Compare JSON objects structurally HTML to Markdown Convert HTML to clean Markdown CSV to JSON Convert CSV data to a JSON array of objects XML to JSON Convert between XML and JSON formats
Generator (5)
Productivity (4)
Utility (9)
Stopwatch & Timer Lap timing stopwatch + countdown timer Online Alarm Clock Browser alarm clock with snooze and countdown World Clock Multi-timezone clocks + converter Random Decision Maker Coin flip, dice, random picker Password Strength Meter Analyze password entropy and strength Unit Price Calculator Compare prices per unit Text to PDF Print text as PDF document Speech to Text Live microphone dictation with editable transcript Screen Info Live screen resolution, viewport, pixel ratio, and device info
Audio (5)
Reference (7)
Periodic Table Interactive periodic table of elements Unicode Character Finder Browse and search Unicode characters ASCII Table Full ASCII chart with search Regex Reference 30+ regex patterns library NATO Phonetic Alphabet Convert text to NATO codes Port Reference Look up common TCP/UDP port numbers Emoji Picker Browse and search emojis, copy with one click
Fun (11)
Text to Handwriting Convert text to handwriting PNG ASCII Art Generator Convert images to ASCII art Meme Generator Create memes with text overlay Team Generator Split a name list into fair random teams Dice Roller Roll dice with NdM+K notation, presets, and roll history Typing Speed Test Measure typing speed and accuracy in a 60-second run Fancy Text Generator Convert text into bold, italic, script, and other Unicode styles Love Calculator Check name compatibility with a playful love score Bingo Card Generator Generate printable 5x5 bingo cards with classic B-I-N-G-O columns Coin Flip Flip a virtual coin with animation, bulk flips, and a persistent tally Random Name Picker Pick random winners from a name list with a spinning animation
Health (10)
BMI Calculator BMI, BMR, and daily calories Macro Calculator Protein, carbs, fat by fitness goal Sleep Calculator Bedtime and wake-up times based on 90-minute sleep cycles Pace Calculator Convert between running pace, speed, and race finish times Body Fat Calculator Estimate body fat percentage with the US Navy method Water Intake Calculator Daily water target based on weight, activity, and climate One Rep Max Calculator Estimate your one-rep max with Epley and Brzycki formulas Calorie Calculator BMR, TDEE and goal calories via Mifflin-St Jeor Ideal Weight Calculator Ideal weight via Devine, Robinson, Miller, Hamwi and healthy BMI range Due Date Calculator Pregnancy due date via Naegele's rule, week and milestones