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Word CounterCount words, characters, sentences, paragraphs, and reading time as you type.Text & Writing
Case ConverterConvert text to UPPERCASE, lowercase, Title Case, Sentence case, and programmer cases.Text & Writing
Character CounterCount characters, words, sentences, lines, and UTF-8 bytes live, with an optional character limit.Text & Writing
Lorem Ipsum GeneratorGenerate classic lorem ipsum placeholder text by paragraphs, sentences, or words.Text & Writing
Remove Line BreaksStrip line breaks and newlines from text — join lines, collapse spaces, and clean up in your browser.Text & Writing
Remove Duplicate LinesRemove duplicate lines from text while keeping the first occurrence — with case-insensitive matching, trimming, and empty-line removal.Text & Writing
Reverse TextReverse text by characters, words, or lines instantly in your browser.Text & Writing
Slugify TextTurn any title or phrase into a clean, URL-safe slug as you type.Text & Writing
Text RepeaterRepeat any text a set number of times with your choice of separator, then copy the result.Text & Writing
Sort Text LinesSort lines of text alphabetically, numerically, by length, or randomly — with dedupe and empty-line removal.Text & Writing
Password GeneratorCreate strong, random passwords with full control over length and character sets.Password & Security
Passphrase GeneratorCreate strong, memorable Diceware-style passphrases from random common words.Password & Security
UUID GeneratorGenerate random version-4 UUIDs in your browser, with options for case, hyphens, and quotes.Password & Security
Base64 Encode / DecodeConvert text to and from Base64 instantly, with full Unicode support — all in your browser.Password & Security
PIN GeneratorGenerate random numeric PINs of any length, with an option to skip weak, obvious codes.Password & Security
Random String GeneratorGenerate random strings and tokens from a character set you control.Password & Security
Length ConverterConvert between meters, feet, miles, inches, kilometers, and more instantly.Converters
Temperature ConverterConvert between Celsius, Fahrenheit, and Kelvin instantly in your browser.Converters
Weight ConverterConvert between grams, kilograms, pounds, ounces, stones, and tons instantly.Converters
Data Storage ConverterConvert bits, bytes, KB, MB, GB, TB and binary KiB, MiB, GiB units instantly.Converters
Speed ConverterConvert between m/s, km/h, mph, ft/s, and knots instantly.Converters
Area ConverterConvert between square meters, square feet, acres, hectares, square miles, and more instantly.Converters
Percentage CalculatorFind a percentage of a number, work out what percent one value is of another, and calculate percentage change.Math & Numbers
Random Number GeneratorGenerate random numbers in any range, with or without duplicates, right in your browser.Math & Numbers
Number to WordsConvert any number into English words — integers, decimals, negatives, and a currency (dollars and cents) mode.Math & Numbers
Prime Number CheckerCheck whether a number is prime, and see its prime factorization, divisors, and the nearest previous and next primes.Math & Numbers
Average CalculatorPaste a list of numbers to get the mean, median, mode, range, min, max, count, sum, and standard deviation instantly.Math & Numbers
HEX to RGB ConverterConvert a HEX color code to RGB and HSL instantly, with a live swatch and color picker.Color & Design
RGB to HEX ConverterConvert RGB color values to a HEX code instantly, with a live swatch and color picker.Color & Design
Color ConverterConvert any color between HEX, RGB, HSL, and HSV with a live picker and copy buttons.Color & Design
Random Color GeneratorGenerate random colors with one click. Pick how many, lock to pastel or bright, and copy any HEX or RGB value.Color & Design
Age CalculatorCalculate your exact age in years, months, and days from any birth date.Date & Time
Unix Timestamp ConverterConvert Unix timestamps to human dates and back, in UTC and your local time.Date & Time
Online StopwatchA free online stopwatch with start, stop, reset, and lap timing down to centiseconds.Date & Time
Countdown TimerA free online countdown timer — set a duration or count down to a date, with a clear alert at zero.Date & Time
Pomodoro TimerA configurable Pomodoro timer that cycles through focused work sessions, short breaks, and long breaks.Date & Time
Date Difference CalculatorFind the exact time between two dates in years, months, days, weeks, and hours.Date & Time
URL Encoder / DecoderEncode or decode URLs and query strings safely, entirely in your browser.Web & Dev
HTML Encoder / DecoderEscape or unescape HTML entities safely, entirely in your browser.Web & Dev
JSON Formatter / ValidatorFormat, minify, and validate JSON with 2-space, 4-space, or tab indentation — all in your browser.Web & Dev
JWT DecoderDecode a JSON Web Token to read its header and payload, with human-readable expiry — all in your browser.Web & Dev
CSV to JSON ConverterConvert CSV to a JSON array of objects or arrays — quoted fields, custom delimiters, all in your browser.Web & Dev
JSON to CSV ConverterConvert a JSON array of objects to CSV — union headers, custom delimiter, proper quoting, all in your browser.Web & Dev
Tip CalculatorCalculate the tip and total on any bill, and split it evenly between people.Finance & Calculators
Discount CalculatorWork out the sale price and how much you save on any discount, with optional stacked deals and sales tax.Finance & Calculators
BMI CalculatorCalculate your body mass index (BMI) from height and weight in metric or imperial units, with the WHO category.Finance & Calculators
Loan CalculatorEstimate the monthly payment, total paid, and total interest on any loan from the amount, rate, and term.Finance & Calculators
Dice RollerRoll virtual dice (d4–d20), pick how many, and see each result plus the total instantly.Generators
Coin FlipFlip a virtual coin for a fair Heads or Tails — flip several at once and keep a running tally.Generators
QR Code GeneratorCreate a downloadable QR code for any link or text, with size and color options.Generators
Username GeneratorCreate catchy, available-style usernames and handles by mixing adjectives and nouns with numbers, separators, and capitalization.Generators
Image to Base64Convert an image to a Base64 data URI in your browser — copy it for HTML, CSS, or JSON.Image
Merge PDFCombine multiple PDF files into one document, right in your browser.PDF
JPG to PDFConvert JPG and PNG images into a single PDF right in your browser — reorder pages and choose page sizing.PDF
AI Token CounterEstimate how many LLM tokens your text uses, plus characters, words, and cost.AI / LLM
Meta Tag GeneratorGenerate SEO title, meta description, Open Graph, and Twitter Card tags to paste into your page head.SEO & Marketing
UTM BuilderBuild tagged campaign URLs with encoded utm_source, utm_medium, and utm_campaign parameters.SEO & Marketing
Keyword Density CheckerAnalyze keyword frequency and density in your text, with stop-word filtering and 1–3 word phrases.SEO & Marketing
Twitter/X Character CounterCount characters against the 280-character X limit, with URLs counted as 23 and a tweet-thread splitter.Social Media
Aspect Ratio CalculatorSolve for a missing width or height from any aspect ratio, or reduce two dimensions to their simplest ratio.Social Media
What Is My User AgentSee your browser user-agent string plus local browser, platform, language, and screen details.Network / What's my…
Browser InformationDetect your browser, OS, screen, viewport, languages, and hardware — all read locally in your browser.Network / What's my…
APA Citation GeneratorBuild correctly formatted APA 7th edition references for websites, books, and journal articles.Education / Citations
Magic 8 BallAsk a yes/no question, shake the ball, and get one of the 20 classic Magic 8-Ball answers.Fun
Random Name PickerPaste a list of names or items and pick one — or several — at random. Great for raffles, giveaways, and teams.Fun
Video File Size CalculatorEstimate a video file size from bitrate and duration, or find the bitrate needed to hit a target size.Audio / Video
Video Timecode CalculatorConvert between SMPTE timecode, total frames, and seconds at any frame rate — 24, 25, 29.97, 30, 60 fps and more.Audio / Video
MLA Citation GeneratorBuild a correctly formatted MLA 9th edition Works Cited entry from the MLA core elements.Education / Citations
Readability Score CalculatorMeasure how easy your writing is to read with Flesch Reading Ease and Flesch–Kincaid Grade Level scores.Education / Citations
Image ResizerResize images to any width and height right in your browser, lock the aspect ratio, then download as PNG or JPEG.Image
What's My Screen ResolutionInstantly see your screen resolution, browser viewport size, device pixel ratio, color depth, and orientation.Network / What's my…
Engagement Rate CalculatorCalculate your social media engagement rate by followers or by reach, then see whether it lands in the low, average, high, or very-high band.Social Media
Random Emoji GeneratorGenerate random emoji instantly. Pick how many you want, filter by category, and copy the whole string to your clipboard with one click.Fun
AI Prompt Cost CalculatorEstimate the API cost of an LLM call from input and output tokens, per-million prices you enter, and the number of requests.AI / LLM
Rotate PDFRotate every page of a PDF by 90, 180, or 270 degrees and download the result — all in your browser, nothing uploaded.PDF