All Free Online Tools

Quickly calculate percentages: find X% of a number, calculate percentage change, or find what percent X is of Y. Free online percentage calculator, no login.

Calculate your Body Mass Index (BMI) from your height and weight. Find out if you're underweight, healthy, overweight, or obese. Free BMI calculator online.

Calculate your exact age in years, months, days, hours, and minutes from your date of birth. Free online age calculator - instant results, no sign-up needed.

Calculate descriptive statistics for any dataset: mean, median, mode, range, variance, standard deviation, and quartiles. Free online statistics calculator.

Calculate the factorial (n!) of any non-negative integer instantly, with step-by-step breakdown. Supports large numbers. Free online factorial calculator.

Generate the Fibonacci sequence up to any number of terms or up to a max value. See the full series instantly. Free online Fibonacci generator, no sign-up.

Calculate the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two or more numbers instantly. Free online GCD/LCM calculator, no sign-up.

Instantly check whether any number is a prime number, with a clear explanation. Supports large numbers. Free online primality tester - no sign-up required.

Solve any quadratic equation ax²+bx+c=0 and get real and complex roots with full working. Uses the quadratic formula. Free online equation solver, no sign-up.

Calculate the average (arithmetic mean) of any list of numbers instantly. Paste your numbers, get mean, sum, and count. Free online calculator, no login.

Pythagorean Theorem Calculator online for pythagorean theorem calculator, Pythagorean, Theorem, Calculator, Formula, Unit, Assumptions. Includes calculator FAQ.

Count words, characters, sentences, paragraphs, and estimated reading time for any text. Great for essays, SEO, and social media. Free online word counter.

Reverse the character order of any text so it reads from right to left. Mirrors words and sentences instantly. Free online reverse text generator, no sign-up.

Generate any amount of Lorem Ipsum placeholder text in words, sentences, or paragraphs for design mockups, wireframes, and prototypes. Free, instant, online.

Remove all duplicate lines from a block of text and keep only unique lines. Optionally sort the output. Free online duplicate line remover, no sign-up needed.

Sort any list of words, names, or lines alphabetically from A to Z or reverse Z to A instantly. Free online alphabetical sorter - no sign-up required.

Remove all line breaks and newlines from text to join it into one continuous paragraph. Fix line-wrapped content from emails and PDFs. Free online tool.

Compare two versions of text side by side and highlight every addition, deletion, and modification. Perfect for proofreading. Free online text diff checker.

URL Slug Generator - Create Clean URL Slugs Online Free online generator with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes.

Count characters, words, sentences, paragraphs, and reading time for any text. Great for essays, tweets, SEO, and social media. Free online counter tool.

Append sequential line numbers to the right side of each line in your text. Great for annotating code or documents. Free browser tool, no sign-up needed.

Extract all email addresses from any block of text, website content, or document paste. Instantly get a clean list of emails. Free online email extractor tool.

Paste raw or minified JSON and instantly beautify it with indentation, syntax highlighting, and tree view. Validates errors and fixes missing quotes. Free tool.

UUID / GUID Generator - Generate v4 UUIDs Online Free online generator with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes.

Decode any JWT and inspect its header, payload, and signature claims instantly. Debug auth tokens safely in your browser. Free online JWT decoder tool.

Paste any cron expression and get a plain-English explanation of exactly when it will run. Understand complex cron schedules instantly. Free developer tool.

Convert Unix timestamps (epoch seconds) to human-readable dates and convert dates back to Unix timestamps. Free online epoch converter, no sign-up needed.

Convert JSON to YAML or YAML to JSON instantly. Useful for Kubernetes configs, CI/CD pipelines, and API schemas. Free online JSON/YAML converter tool.

CSV to JSON Converter online for csv to json, Csv, Json, Converter, Error, Handling, Guidance. Includes converter features, examples, FAQs, use cases, on AdeDX.

Convert Markdown syntax into clean, valid HTML markup instantly. Preview the rendered output and copy the HTML code. Free online Markdown-to-HTML converter.

Beautify and format messy or minified HTML code with proper indentation and line breaks. Paste HTML and get clean, readable output instantly. Free online tool.

Instantly beautify and format minified or messy CSS code with proper indentation and spacing. Paste CSS, get clean output. Free online CSS formatter, no login.

JavaScript Beautifier - Format & Indent JS Code Online online formatter with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes.

Instantly convert Celsius temperatures to Fahrenheit and back. See the formula and exact result for any temperature value. Free online °C to °F converter.

Convert kilograms to pounds (lbs) or pounds to kilograms instantly. See the exact conversion result and formula. Free online kg to lbs weight converter.

Length Converter online for length converter, Length, Converter, Error, Handling, Guidance, Adjacent. Includes converter features, examples, FAQs, use cases UI.

Weight Converter online for weight converter, Weight, Converter, Error, Handling, Guidance, Adjacent. Includes converter features, examples, FAQs, use cases UI.

Speed Converter online for speed converter, Speed, Converter, Error, Handling, Guidance, Adjacent. Includes converter features, examples, FAQs, use cases Guide.

Volume Converter online for volume converter, Volume, Converter, Error, Handling, Guidance, Adjacent. Includes converter features, examples, FAQs, use cases UI.

Unit Converter - Convert Length, Weight & Temp Online online calculator with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes.

Calculate the area of squares, rectangles, circles, triangles, and more using simple formulas. Free online area calculator with instant results and formulas.

Unit Converter - Convert Length, Weight & Temp Online online calculator with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes.

Encode any plain text or file to Base64 format for safe data transmission in APIs, JWT tokens, emails, and XML. Free online Base64 encoder, no sign-up.

Generate cryptographic hash digests for any text using MD5, SHA-1, SHA-256, and SHA-512 algorithms. Verify file integrity or hash passwords. Free online tool.

URL-encode any text or string by converting special characters to their percent-encoded equivalents (%20, %2F). Free online URL encoder, no sign-up needed.

Escape special HTML characters (, &, ", ') into their safe entity equivalents to prevent XSS and display issues. Free online HTML encoder tool, no login.

Password Generator online, for password generator, Password, Generator, Generation, Framing, Quality, Expectations. Includes generator features, examples, FAQs.

Caesar Cipher online, for caesar cipher, Caesar, Cipher, Error, Handling, Guidance, Adjacent. Includes converter features, examples, FAQs, use cases, with FAQs.

Encode or decode any text using the ROT13 cipher - rotate each letter 13 places in the alphabet. Since ROT13 is its own inverse, one click encodes and decodes.

Translate text to Morse code dots and dashes, or decode Morse back to English. Supports letters, numbers, and punctuation. Free online Morse translator.

Pick any color from a visual palette and instantly get its HEX, RGB, HSL, and CMYK values. Free online color picker and converter - no sign-up needed.

Convert any HEX color code to its RGB (red, green, blue) values instantly. Also converts to HSL and CMYK. Free online color code converter, no sign-up needed.

Convert RGB color values (red, green, blue) into HEX color codes for use in CSS, HTML, and design tools. Free online RGB-to-HEX converter, no sign-up needed.

Pick colors with full alpha transparency control in RGBA and HSLA formats. Get the CSS color string for any opacity level. Free online RGBA/HSLA color picker.

Check the contrast ratio between any two colors for WCAG 2.1 AA and AAA accessibility compliance. Free online color contrast checker for designers and devs.

Generate a full palette of lighter tints and darker shades for any base color. Get HEX codes for every shade. Free online color shades generator for designers.

Resize Image Online - Change Width & Height for Free online editor with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes, use.

Resize Image Online - Change Width & Height for Free online editor with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes, use.

Crop Image Online - Trim Photos to Any Size for Free online editor with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes, use.

Desaturate any image to grayscale (black and white) instantly in your browser. Adjust desaturation level and download. Free online grayscale photo converter.

Encode any plain text or file to Base64 format for safe data transmission in APIs, JWT tokens, emails, and XML. Free online Base64 encoder, no sign-up.

Desaturate any image to grayscale (black and white) instantly in your browser. Adjust desaturation level and download. Free online grayscale photo converter.

Generate truly random numbers between any minimum and maximum value. Set quantity, exclude duplicates, and sort results. Free online random number generator.

Password Generator online, for password generator, Password, Generator, Generation, Framing, Quality, Expectations. Includes generator features, examples, FAQs.

UUID / GUID Generator - Generate v4 UUIDs Online Free online generator with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes.

QR Code Generator online for qr code generator, Code, Generator, Generation, Framing, Quality, Expectations. Includes generator features, examples, FAQs, Guide.

QR Code Generator online for qr code generator, Code, Generator, Generation, Framing, Quality, Expectations. Includes generator features, examples, FAQs, Guide.

Random Word Generator online for random word generator, Random, Word, Generator, Generation, Framing, Quality. Includes generator features, examples, FAQ guide.

Time Zone Converter - Convert Times Between Zones Free online converter with clear input, instant browser results, copy-ready output, examples, FAQs, privacy notes.

Date Calculator online for date calculator, Date, Calculator, Formula, Unit, Assumptions, Interpretation. Includes calculator features, examples, FAQs, for SEO.

Convert Unix timestamps (epoch seconds) to human-readable dates and convert dates back to Unix timestamps. Free online epoch converter, no sign-up needed.

Pomodoro Timer online for pomodoro timer, Pomodoro, Timer, Utility, Focused, Practical, Next. Includes text tool features, examples, FAQs, use cases, with FAQs.

Pomodoro Timer online for pomodoro timer, Pomodoro, Timer, Utility, Focused, Practical, Next. Includes text tool features, examples, FAQs, use cases, with FAQs.

Calculate your exact age in years, months, days, hours, and minutes from your date of birth. Free online age calculator - instant results, no sign-up needed.