Fast, free web tools & games.
No signup. Nothing uploaded.
Everything here runs entirely in your browser — pick one and go, your data never leaves your device.
Over a hundred calculators, converters, text/code/design utilities and classic games — each does one thing well, loads instantly, and works offline. No accounts, no uploads.
Tools
Small, fast utilities that run entirely in your browser.
Text
Word Frequency Counter
See which words appear most often — nothing uploaded.
Text Diff Checker
Compare two texts line by line and see exactly what changed.
Word & Character Counter
Instant word, character, sentence and reading-time counts as you type.
Words to Pages Calculator
Estimate pages from a word count, or work backwards from a page target — by font, size and spacing.
Readability Score Calculator
Paste text, instantly see six standard readability formulas at once.
Case Converter
Change text to UPPERCASE, lowercase, Title Case, Sentence case and more.
Morse Code Translator
Text ↔ Morse with audio, ITU standard.
Caesar Cipher / ROT13
Shift letters to encode or decode, with a ROT13 preset and all 25 shifts to crack a cipher.
Emoji Picker
Search emojis by name and click to copy — browse by category.
Text to ASCII Art Generator
Type a word, get a big block-letter ASCII banner instantly. Choose the fill character, copy the result.
Data & Code
Scientific Calculator
Full expression calculator — trig, logs, powers and more.
Unit Converter
Length, weight, temperature, volume and more.
Recipe & Cooking Measurement Converter
Convert cups/tbsp/tsp to grams/oz and back, per ingredient — since ingredients weigh differently.
Carbon Footprint Calculator
Estimate your annual CO2 emissions from driving, flights, electricity and diet.
Sleep Cycle Calculator
Get the best bedtimes or wake-up times based on 90-minute sleep cycles.
JWT Decoder
Decode a JSON Web Token — your token never leaves your browser.
Subnet Calculator
Network address, broadcast, mask, wildcard mask and usable host range for any IPv4 CIDR.
JSON Formatter & Validator
Beautify, minify and validate JSON with error location.
JSON Diff
Compare two JSON objects by structure and key — see exactly what changed, with the full path.
JSON to TypeScript Interface Generator
Paste JSON, get TypeScript interfaces — nested objects, arrays and optional fields all handled.
SQL Formatter & Beautifier
Paste a query, get it cleanly indented by clause — SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY.
Markdown Table Generator
Fill a grid, set alignment, copy clean Markdown.
Markdown Resume Builder
Write your resume in Markdown, preview it styled live, export a clean PDF via your browser's print function.
Citation Generator
Enter a book or website's details once, get APA, MLA and Chicago citations side by side.
Cover Letter Generator
Fill in job title, company and key skills to get a formatted cover letter draft.
Resume ATS Keyword Checker
Paste your resume and a job description to see your keyword match score.
Invoice Generator
Add line items, tax and discount, get a clean invoice you can print or save as PDF.
Receipt Generator
Add line items, tax and payment details to make a clean, printable receipt for a completed sale.
Freelance Rate Calculator
Enter your target income, expenses and billable hours to get the hourly, day and monthly rate you need to charge.
AI Token Cost Calculator
Estimate tokens and compare per-request and per-month API cost across GPT, Claude, Gemini, DeepSeek — all rates editable.
Markdown to HTML Converter
Live preview as you type. Copy the rendered HTML whenever you need it.
CSV ↔ JSON Converter
Convert CSV to a JSON array of objects and back, with quoted-field support.
YAML ↔ JSON Converter
Convert YAML to JSON and back — nested maps, lists and scalars, either direction.
Roman Numeral Converter
Number ↔ Roman numerals, 1 to 3999.
Number Base Converter
Convert between binary, octal, decimal, hex and any base 2–36.
Cron Expression Parser
Turn a cron expression into plain English and see its next run times.
Git Branch Name Generator
Pick a type, ticket and description, get a clean valid branch name plus a ready-to-copy checkout command.
Unix Timestamp Converter
Convert epoch timestamps to dates and back — seconds or milliseconds, local and UTC.
Slugify — Text to URL Slug
Turn text into a clean, URL-safe slug. Paste a list to batch-convert.
Screen Resolution & PPI Calculator
PPI, aspect ratio, diagonal pixels and megapixels from a resolution — plus ratio-locked resizing.
Encode & Hash
Number to Words
Spell out numbers in words, with cheque mode.
Base64 Encode & Decode
Convert text to Base64 and back, with full UTF-8 support.
Image to Base64 Converter
Drop an image, get a data: URI and CSS snippet — handy for embedding small icons.
URL Encode & Decode
Percent-encode text for safe use in URLs, and decode it back.
UTM Builder
Add UTM tracking parameters to any URL with a live preview and one-click copy.
SHA Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text.
Generators
Text to Speech
Read any text aloud with your browser's voices.
Lorem Ipsum Generator
Placeholder text by paragraphs, sentences or words.
Meta Tag Generator
SEO, Open Graph & Twitter meta tags, ready to paste.
Word Cloud Generator
Paste any text and get a word cloud sized by frequency, with a PNG download.
PDF Merge
Combine multiple PDF files into one, reorder and download — entirely in your browser.
PDF Split
Extract specific pages or split a PDF every N pages — entirely in your browser.
Bill Splitter
Add each person's share, tax and tip, and see exactly what everyone owes.
Image Watermark
Add a text watermark, positioned or tiled — entirely in your browser, nothing uploaded.
CSS Border Radius Generator
Rounded corners, pills, circles and blob shapes.
CSS Clip Path Generator
Pick a preset shape, drag its points to customize, and copy the CSS.
CSS Box Shadow Generator
Visual box-shadow builder with live preview.
Color Palette Generator
Harmonious schemes — lock, reshuffle, copy HEX/RGB.
Color Palette Extractor from Image
Drop an image, get its dominant colors as HEX/RGB swatches. Nothing uploaded.
Color Blindness Simulator
See how an image looks under protanopia, deuteranopia, tritanopia or achromatopsia.
Color Contrast Checker
Enter a text and background color, see the WCAG contrast ratio and AA/AAA pass status instantly.
Favicon Generator
Emoji, text or image → a full favicon set + .ico.
Random Number Generator
Random numbers in any range — draws, raffles, dice.
Spin the Wheel
A random picker & decision wheel for names, prizes or dinner.
Random Team Generator
Paste a list of names and split them into random teams, by team count or by team size.
Password Generator
Strong random passwords generated securely in your browser — never sent.
Diceware Passphrase Generator
Strong, memorable passphrases built from the official EFF 7,776-word Diceware list.
Signature Generator
Draw or type your signature, then download a transparent PNG — nothing uploaded.
Password Strength Checker
Type a password, see its estimated strength, crack time and weak patterns — checked locally.
File Encryption Tool
Encrypt or decrypt any file with a passphrase using AES-256-GCM. Nothing is ever uploaded.
UUID Generator
Generate random UUID v4 values in bulk with cryptographic randomness.
Flashcards — Spaced Repetition
Add your own cards, review what's due — the classic SM-2 algorithm adjusts the schedule automatically.
Random Name Generator
Generate realistic random names for test data, mockups or characters.
Business Name Generator
Enter a keyword and get a batch of brandable name ideas for brainstorming.
Anagram Solver & Word Unscrambler
Type your letters, see every word you can make — sorted longest first. Use ? as a wildcard.
QR Code Generator
Turn any text or link into a QR code and download it as PNG or SVG.
Barcode Generator (EAN-13 / UPC-A)
Type 12 or 13 digits, get a real scannable barcode with the check digit calculated automatically.
QR & Barcode Scanner
Upload a photo or use your camera to decode a QR code or barcode instantly.
Images & Color
Image Compressor & Resizer
Shrink JPG, PNG and WebP right in your browser — the file never leaves your device.
Image Cropper
Drag to crop, resize with handles, lock a ratio, download at full resolution.
Screen Recorder
Record your screen, a window, or a tab and download the video — nothing uploaded.
EXIF Viewer & Remover
See the camera, date and GPS data hidden in a photo, then strip it all with one click.
CSS Gradient Generator
Build gradients with a live preview and copy the CSS.
CSS Animation Generator
Pick a preset, tune the timing, preview live, copy the @keyframes CSS.
Color Converter
Convert between HEX, RGB and HSL with a live picker and preview.
Meme Generator
Upload any image, add classic top/bottom captions, and download — no watermark.
Time
Pomodoro Timer
A focus timer with breaks — customizable, with a sound alert.
To-Do List
Add tasks, check them off, filter by active or completed. Saved in your browser.
Habit Tracker
Add daily habits, check them off, and watch your streak grow with a 35-day heatmap.
Countdown Timer & Stopwatch
A countdown with an alert, or a stopwatch with laps.
Time Zone Converter
Compare a time across cities, with DST handled.
Reference
HTTP Status Codes
Searchable reference of every HTTP status code and what it means.
Regex Tester & Cheatsheet
Test regular expressions with live match highlighting, plus a cheat sheet.
ASCII Table
All 128 ASCII characters with dec, hex, octal and binary — searchable.
HTML Entities
Searchable reference of common HTML entities — name, decimal and hex.
Calculators
Quick, private calculators — nothing you type is uploaded.
Discount Calculator
Sale price, savings, stacked discounts and reverse percent-off.
Due Date Calculator
Pregnancy due date, weeks along and trimester.
Sales Tax Calculator
Add or remove sales tax; optional US state rates.
Unit Price Calculator
Enter price, size and unit for a few products to see which is actually cheaper per unit.
Time Card Calculator
Weekly hours from clock-in/out and breaks, plus pay.
Retirement / 401(k) Calculator
Project your nest egg and monthly retirement income.
Mortgage Calculator
Full monthly payment including tax, insurance, HOA and PMI, plus the amortization schedule.
Salary Take-Home Pay Calculator
2026 US net pay after taxes, by pay period.
Pay Raise Calculator
Enter your salary and a raise (percentage or flat amount) to see your new salary by pay period.
Meeting Cost Calculator
Enter attendees, rate and duration to see what a meeting actually costs — plus the annual cost if recurring.
Loan & Mortgage Calculator
Monthly payment, total interest, and full schedule.
Auto Loan Calculator
Vehicle price, down payment, trade-in and sales tax — see your monthly car payment.
HELOC Calculator
Home value, mortgage balance and CLTV — see your max home equity line and payment estimates.
Rental Property ROI Calculator
Price, rent and expenses — see cap rate, cash-on-cash return and monthly cash flow.
Net Worth Calculator
Add up your assets, subtract your liabilities, see your net worth.
50/30/20 Budget Calculator
Split your take-home income into needs, wants and savings — or set your own split.
Debt Payoff Calculator
Compare the snowball and avalanche strategies — months to debt-free and total interest for each.
Compound Interest Calculator
Investment growth with regular contributions.
Savings Goal Calculator
Enter your target, current savings, monthly contribution and rate to see exactly how long it'll take.
Ideal Weight Calculator
Ideal weight from four formulas, plus healthy range.
BMI Calculator
Body Mass Index, category and healthy weight range.
Body Fat Calculator
Body fat % from measurements (US Navy method).
Calorie Calculator (TDEE)
Daily calories to lose, maintain, or gain weight.
Age Calculator
Exact age, and days between any two dates.
Percentage Calculator
Percent of, what percent, and percentage change.
Grade Calculator
Weighted grade, or the final-exam score you need.
GPA Calculator
Weighted GPA on the 4.0 scale from grades and credits.
Fuel Cost Calculator
Total gas cost for a trip, metric or imperial.
Tip Calculator
Tip, total, and split the bill between people.
Games
Play solo, or send a link and play a friend.
Reaction Time Test
How fast are your reflexes? Wait for green and click.
Click Speed Test
Click as fast as you can for 5, 10, 30 or 60 seconds and see your clicks per second.
SameGame
Clear same-colour groups — bigger is better.
Tower of Hanoi
The classic disk-stacking puzzle — with auto-solve.
Peg Solitaire
Jump pegs to leave just one — the classic cross board.
Mastermind
Code-breaking logic puzzle — crack the colour code.
Dice Roller
Roll 3d6+2 or tap a quick die — for tabletop & D&D.
Yahtzee
Roll, hold and score across 13 categories — the classic dice game.
Ice Slider
Slide-until-wall route puzzle on ice.
Sokoban
The classic 1982 box-pushing puzzle — push, never pull.
Maze
Solve a fresh random maze — three sizes, timed.
Maze Chase
Eat every dot while dodging the chasers. Power pellets turn the tables.
Flood It
Flood the board to one colour before you run out of moves.
Lights Out
Flip plus-shapes of lights to darken the board.
Match 3
Bejeweled-style swap-and-clear gem puzzle.
Aim Trainer
Click targets fast — tracks accuracy and reaction time.
Tic-Tac-Toe
Vs an unbeatable AI, an easy AI, or a friend.
Rock Paper Scissors
Play against the computer. Wins, losses, ties and best streak tracked.
Flag Quiz
Guess the country from its flag, multiple choice, 10 questions per round.
Geo Shape Guess
A country's outline, no name or flag — guess it in six tries with distance and direction hints.
Jigsaw Puzzle
A fresh generated scene, cut into 16 tiles and shuffled. Click two tiles to swap them until it's whole.
Block Puzzle
Drag shapes to fill and clear rows — no timer.
Endless Runner
Jump and duck to dodge — a one-button dino-style runner.
Zigzag Ball
The ball rolls forward automatically. Tap the instant the path turns, or fall off the edge.
Whack-a-Mole
Tap moles before they duck — a fast reaction game.
Typing Mole
Each mole pops up with a letter — type it to whack it. Trains typing reflexes.
Vertical Jumper
Doodle-style portrait bouncer — climb as high as you can.
Mahjong Solitaire
Match free tiles to clear the board — always solvable.
Bubble Shooter
Aim, shoot, match 3+ to pop — a classic arcade puzzle.
Plinko
Drop a ball through the peg board and see which slot it lands in. Virtual points only.
Screw Master
Pull colored screws into a 7-slot tray and clear matching triples before it overflows — endless stages.
Zip
Draw one path through every cell, visiting the numbered checkpoints in order. Each board has exactly one solution.
Tango
Fill the grid with suns and moons, balance every row and column, honor the = / x clues. Each board has exactly one solution.
Flow Free
Connect each pair of matching colored dots with a single path, filling every cell with no crossing lines.
Tap Flyer
Flappy-style: tap to fly through the pipe gaps.
Idle Clicker: Stardust Factory
Tap, auto-generate, earn offline, prestige for boosts.
Sudoku
Classic Sudoku — three difficulties, unique solutions.
KenKen
Fill the grid so every row and column has each number once, and every cage matches its arithmetic clue.
Futoshiki
Fill the grid so every row and column has each number once, honoring the </> arrows between cells.
Minesweeper
The classic — first click safe, three difficulties.
Nonogram
Picture logic puzzles — fill from the number clues.
Tents and Trees
Place one tent next to every tree so the row and column counts match, with no two tents touching.
Solitaire
Classic Klondike — click to move, draw 1 or 3.
Blackjack
Beat the dealer without going over 21. Virtual chips only — no real money.
Spades
Classic partnership trick-taking — bid your tricks and race to 500 with your AI partner.
Hearts
No partners — avoid the points, or shoot the moon. Pass 3 cards each hand vs three AI opponents.
FreeCell Solitaire
All cards face up from the start — a pure puzzle of untangling the columns, almost no luck involved.
Spider Solitaire
10 columns, 2 decks — build same-suit King-to-Ace runs to clear them. 1/2/4-suit difficulty.
Pyramid Solitaire
Pair exposed cards that add up to 13 to clear the 28-card pyramid — Kings clear alone.
Golf Solitaire
Play a card one rank higher or lower than the foundation to clear all seven columns.
Yukon Solitaire
All cards dealt face up, no stock pile — move any card and everything on it to build the foundations.
TriPeaks Solitaire
Clear three card peaks by chaining cards one rank higher or lower than the foundation.
Conway's Game of Life
Draw cells, load classic patterns like the Glider and Pulsar, and watch the simulation evolve generation by generation.
Typing Speed Test
Measure your WPM and accuracy — best scores saved.
Word Search
Find hidden words in the grid — several themes.
Memory Match
Flip cards to find pairs — three sizes, best scores.
Hangman
Guess the word letter by letter — several categories.
Sliding Puzzle
The classic 15 puzzle — slide tiles into order.
Klotski (Huarong Dao)
Free the trapped general — the classic Chinese sliding-block puzzle.
Breakout
Classic brick breaker — bounce the ball, clear the wall.
Simon
The memory sequence classic — repeat the growing pattern.
Word Guess
Guess the five-letter word in six tries — daily, plus practice.
Word Swap
Six words locked in a grid, letters all scrambled — swap tiles to fix them.
Word Ladder
Turn the start word into the end word, one letter at a time — every step a real word.
Mini Crossword
A bite-sized 5x5 crossword with a solve timer — daily, plus practice.
Equation Guess
Guess the hidden true equation in six tries — daily, plus practice.
Emoji Movie Guess
Guess the movie from an emoji clue in six tries — daily, plus practice.
Cryptogram
Every letter is swapped for another — decode the hidden quote. Daily puzzle plus unlimited practice.
Parking Jam
Slide the blocked cars out of the way so the red car can escape. 12 levels with a par move count.
Daily Word Groups
Sixteen words hide four groups of four. A new puzzle every day.
Daily Trivia Quiz
Ten general-knowledge questions — the same quiz for everyone each day, plus practice mode.
Pinpoint
Five clue words are revealed one at a time — guess their shared category in as few clues as possible.
Spelling Bee
Make words from 7 letters, always using the center letter. Find the pangram for a big bonus.
Word Boggle
Connect adjacent letters (even diagonally) to spell as many words as you can in 90 seconds.
Letter Boxed
Chain words around a 12-letter square, never two letters from the same side in a row, to cover every letter.
Strands
Trace adjacent letters to find every word tied to today's theme, including the spangram that spans the board.
Checkers (Draughts)
Jump pieces, king your men — play a friend online.
Dots and Boxes
Draw lines, close boxes — play a friend online.
Pong
The classic paddle game — play the computer or a friend online.
Connect Four
Drop discs to get four in a row — play a friend online.
Chess
Full rules — play the computer or a friend online.
Chess Puzzles
Find the checkmate in one move. 10 hand-verified tactics with a hint button.
Reversi (Othello)
Trap discs to flip them — play the computer or a friend online.
Mancala
Sow seeds counter-clockwise, land in your store for another turn, or capture your opponent's seeds.
Battleship
Fire at hidden grids until one fleet is sunk — vs a computer that hunts after a hit.
Battleship Solitaire (Bimaru)
Deduce where every ship is hidden from row/column clues — no guessing. Verified unique solutions.
Binary Puzzle (Takuzu / Binairo)
Fill with 0s and 1s: balanced rows/columns, no run of 3, no duplicate rows or columns.
Kakuro (Cross Sums)
Fill each run with 1-9 adding up to its clue, no repeats within a run. Verified unique solutions.
Sumplete
Delete numbers until every row and column sums to its target. Pure deduction, verified unique solutions.
Xiangqi (Chinese Chess)
Play the computer, a friend beside you, or send a link and play online.
Gomoku (Five in a Row)
Play the computer, a friend beside you, or send a link and play online.
Space Shooter
Blast waves of invaders and a boss.
Block Stack
The classic falling-blocks puzzle — rotate, stack, clear lines.
Stack Tower
Tap to drop each sliding layer and align it with the tower below — the overhang gets trimmed off.
Snake
Grow longer, avoid the walls and your tail.
Water Sort Puzzle
Pour colored water between tubes until each tube holds one color. 12 levels, all verified solvable.
2048
Slide and merge tiles to reach 2048. Keyboard and touch supported.
Threes-Style Number Merge
1+2 makes 3, matching numbers 3+ double. See the next tile before you move — different rules than 2048.
Hexa Merge
A honeycomb instead of a square grid — tap 3+ connected same numbers to merge and double.
Fruit Merge
Real physics, not a grid — drop fruits, matching ones merge into the next size up.
Archery Duel
Set angle and power, account for the wind, fire — turn-based duel, 2-player or vs computer.
Backgammon
One of the oldest board games in the world — hit blots, enter from the bar, bear off first to win.
Dominoes
Classic double-six dominoes against the computer. Match the open ends, draw when stuck.
Animal Chess (Jungle)
Rank-based captures, river-jumping lions and tigers, and a race to the opponent's den. Play the computer or a friend.
Battle Tanks
Defend your base from waves of enemy tanks — blast through brick walls, dodge and destroy. Solo or local 2-player co-op.
Snake Duel
Two snakes, one board, one apple — Arrow keys vs WASD. Crash first and you lose. Local 2-player, best-of series tracked.
Queens Puzzle
One crown per row, column and color — none touching, not even diagonally. Three difficulties.
Mahjong — Wildcard & Bomb Edition
A custom 4-player Mahjong variant vs 3 computer opponents, with a wildcard tile and bomb scoring.
Flap Dash
Tap or press space to flap and squeeze through scrolling pipe gaps. One-touch endless arcade.
Tiny Fishing
Hold to lower your hook, catch fish for coins, and upgrade your gear to reach deeper water.
Waffle Swap
Swap letter tiles to complete six overlapping words before you run out of swaps.
Stick Bridge
Hold to grow a stick, release to bridge the gap to the next platform.
Basketball Free Throw
Tap when the swinging meter is centered to sink the shot. Three misses ends the run.
Knife Toss
Tap to throw a knife into the spinning post — avoid the ones already stuck in it.
Color Match
A color word appears in an ink color — decide fast whether they match before time runs out.
Deduction Grid
8 candidates, 4 clues revealed one at a time — use logic to find the mystery match.
Guides
In-depth explainers, paired with a verified diagram and a link to play the real game.
Central Cannon, Horse-on-the-Head (中炮盘头马)
One of Xiangqi's most aggressive openings, illustrated with a real 2023 national league game.
Horse-and-Cannon Mate (马后炮)
The single most useful Xiangqi mating pattern, illustrated with a real 21-move game from a 1570 classical manual.