2048
Slide and merge numbered tiles to reach 2048. Classic number puzzle game.
Advanced Calculator
Multi-purpose advanced calculator: statistics, matrices, base conversion, equations, and a live tape calculator.
Advanced Calendar
Generate a full calendar for any year with public holidays for every country worldwide (verified offline data for 39 countries, live lookup for the rest), add personal events, and download as a print-ready PDF in Letter, Legal, or A4 size.
Age & Date Calculator
Calculate exact age, days between dates, countdown, and date arithmetic.
Alarms
Set multiple browser alarms with custom labels, sounds, and repeat options.
Amortization Schedule
Generate a full month-by-month loan amortization schedule showing principal, interest, and remaining balance, with CSV export.
Anagram & Scrabble Solver
Find all anagrams and valid words from any set of letters. Includes Scrabble scores.
Image to ASCII Art
Convert any uploaded image into text-based ASCII art, with adjustable width and an invert option, ready to copy.
Background Remover
Remove image backgrounds using the remove.bg API. Paste your API key in settings.
Base64 Encoder / Decoder
Instantly encode text to Base64 or decode Base64 back to plain text. URL-safe option included.
Battleship
Classic Battleship against the computer. Ships are placed randomly for both sides — take turns firing until one fleet is sunk.
Blackjack
Classic Blackjack card game with betting, splits, and doubling down. Runs entirely in the browser.
Blocks
Pixel-art grid painter with a big multi-palette color picker, click-and-drag painting, adjustable grid size, and PNG export with or without grid lines.
BMI Calculator
Body Mass Index calculator with health category, ideal weight range and calorie estimator.
BMR & Calorie Calculator
Calculate Basal Metabolic Rate (BMR) and daily calorie needs based on age, weight, height, and activity level. Includes macronutrient breakdown.
Boggle / Word Finder
Find as many words as possible in the letter grid. Timed challenge with scoring.
Breakout
The classic paddle-and-ball brick breaker. Use the mouse, touch, or arrow keys to keep the ball alive and clear every brick.
Budget Generator
Create income/expense budgets with category tracking, savings goals, and visual breakdown.
Checkers
Classic checkers (draughts) against a minimax AI with alpha-beta pruning, 3 difficulty levels, mandatory captures, multi-jumps, kings, hints, and undo.
Color Palette Generator
Generate beautiful color palettes: complementary, triadic, analogous, split-complementary, and monochromatic. Copy HEX, RGB, or HSL values.
Color Picker
Advanced color picker with HEX, RGB, HSL, CMYK conversions, palette generator and gradients.
Compound Interest Calculator
Calculate compound interest with regular contributions, inflation adjustment, and growth charts.
Connect Four
Classic Connect Four vs a smart AI opponent. Drop discs to connect four in a row — horizontally, vertically, or diagonally.
Color Contrast Checker
Check the WCAG contrast ratio between a foreground and background color, with pass/fail results for AA and AAA at both text sizes.
Countdown
Countdown to any date or set a timer. Multiple countdowns. Share countdown links.
Cron Expression Explainer
Paste a standard 5-field cron expression to get a plain-English explanation and the next upcoming run times.
Crossword
Play a classic crossword puzzle — click a clue or cell to type an answer, then check your work or reveal the solution.
Cryptogram
Solve letter-substitution ciphers. Puzzle categories, hints, and custom puzzles.
Currency Converter
Convert between 100+ world currencies with live rates via ExchangeRate API.
Decision Maker
Spin the wheel of decision! Add options and let chance decide for you.
Dice Roller
Roll any combination of RPG dice (d4, d6, d8, d10, d12, d20, d100) with modifiers and history.
Diff Checker
Compare two blocks of text line by line and highlight what was added, removed, or unchanged.
Emoji Slide
A 3D sliding jigsaw puzzle built from a random emoji picture. Solve 3×3 or 4×4 boards with hints and a full auto-solver.
Favicon Generator
Turn an uploaded image, emoji, or letter into a set of favicon PNGs at every standard size, ready to download.
Sports Fixtures
Generate, manage, and track Basketball & Football/Soccer fixtures with standings, scores, officials, and period breakdown.
GPA Calculator
Add your courses, credit hours, and letter grades to calculate a weighted GPA on the standard 4.0 scale.
Gradient Generator
Build linear or radial CSS gradients with multiple color stops, preview them live, and copy the generated CSS.
Graphing Calculator
Plot one or more y = f(x) functions on an interactive graph with pan and zoom. Supports sin, cos, tan, sqrt, abs, log, and more.
Habit Tracker
Track daily or weekly habits with GitHub-style streak heatmaps, current/longest streak stats, browser reminders, and printable progress reports.
Hangman
Classic Hangman word game with multiple categories, hints, and difficulty levels.
HTTP Status Code Lookup
Searchable reference of every standard HTTP status code, grouped by class, with a plain-English description of each.
Image Compressor
Compress and resize images client-side with quality control. Supports batch processing.
Insane Blocks
A fast-paced falling-block stacking game with 18 piece shapes, ghost-piece preview, level progression, and full keyboard, mouse, touch, and gamepad support.
Invoice Generator
Create professional invoices with line items, tax, discounts, and print-ready output.
JSON Formatter
Format, validate, and minify JSON data with syntax highlighting and error reporting.
JWT Decoder
Decode a JSON Web Token's header and payload client-side, with human-readable timestamps. Does not verify the signature.
Kanban Board
A simple To Do / In Progress / Done board. Drag cards between columns or use the arrow buttons; everything saves to this browser automatically.
Link Shortener
Create short links stored on your own domain with click tracking and management.
Loan & EMI Calculator
Calculate loan repayments, EMI, total interest, amortisation schedule with chart.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text by words, sentences or paragraphs. Multiple variants.
Macro Calculator
Calculate your BMR, TDEE, and a protein/fat/carb macro split based on your stats, activity level, and goal.
Mad Libs
Fill in the blanks to create hilarious stories. Multiple templates and share options.
Markdown Editor
Write Markdown with live preview. Supports headings, bold, italic, links, lists, code blocks, blockquotes, and tables.
Mastermind
The classic code-breaking game — guess the secret 4-color sequence within 10 tries using black/white peg feedback.
Math Quiz
Speed arithmetic challenge: race against the clock with addition, subtraction, multiplication and division.
Math Survival
Every correct answer buys you more time and the difficulty ramps up — every wrong one costs you. Survive as many levels as you can before the clock runs out.
Quick Math: True or False
An equation flashes on screen — is it right or wrong? Tap as fast as you can before time runs out. No typing required, great on touch and gamepad.
Maze Generator
Generate a random maze and navigate from start to finish with the arrow keys, or reveal the shortest path with the solver.
Meeting Planner
Add teammates in different time zones and see a color-coded hourly grid to instantly spot everyone's best overlapping meeting time.
Meme Generator
Upload an image, add classic top/bottom Impact-style caption text, and download your meme as a PNG.
Memory Card Game
Flip cards to find matching pairs. Three difficulty levels, move counter, and best-time tracking.
Minesweeper
Classic Minesweeper with three difficulty levels, timer and flag counter.
Mortgage Calculator
Calculate monthly payments, total interest, and view full amortization schedule.
My IP
Show your public IP address with geo-location, ISP info, and network details.
Nonogram
Solve picture logic puzzles: use the row and column number clues to figure out which cells to fill in and reveal the hidden picture.
Number Base Converter
Convert numbers between Binary, Octal, Decimal, Hexadecimal and more — live as you type.
Number Guessing Games
Three number games: classic guess the number, mastermind code-breaker, and memory matrix.
Number Slide 3D
A 3D sliding number puzzle with real-time tile animation, hints, auto-solve, gamepad support, and 8 escalating stages from 3×3 up to 10×10.
Online Notepad
Rich text notepad with auto-save, multiple notes, export and formatting toolbar.
Password Generator
Generate strong, customizable passwords with strength meter and bulk generation.
PDF Suite
Full PDF toolkit: convert, extract text, merge, organize pages with drag-and-drop.
Percentage Calculator
Calculate percentages, changes, differences, tips, and discounts.
Pomodoro Timer
Boost focus with the Pomodoro Technique. Work sessions, short breaks, long breaks, and task tracking.
QR Code Generator
Generate QR codes for URLs, text, contacts, WiFi, email, and more. Download as PNG/SVG.
Random Name Generator
Generate random names by gender, nationality, and style. Batch generate for lists.
Random Quotes Generator
Display inspirational, motivational, and themed random quotes with author attribution.
Regex Tester
Test JavaScript regular expressions live. Highlights matches, shows groups, includes common regex patterns library.
Retirement Calculator
Project your retirement savings balance from your current age, contributions, and expected return, and see if you're on track for your goal.
Rock Paper Scissors
Play Rock, Paper, Scissors against the computer with score tracking and win streaks.
Roman Numerals
Convert between Arabic numbers and Roman numerals (1–3,999,999). Includes history of Roman numeral system and examples.
Rubik's Cube
An interactive 3D Rubik's Cube — drag to orbit the view, turn any face with the on-screen controls, scramble, and reset.
Scientific Calculator
Full-featured scientific calculator with memory, history, and trig functions.
Simon Says
Classic Simon Says color memory game. Watch the pattern, then repeat it — how far can you go?
Simple Calculator
Clean, fast basic calculator with history and keyboard support.
Sleep Calculator
Work backward from a wake-up time, or forward from bedtime, to find the best times to fall asleep based on 90-minute sleep cycles.
Number Slide
Classic sliding number puzzle. Arrange tiles in order with the fewest moves possible. 3×3, 4×4, or 5×5 grids.
Snake Game
Classic Snake — eat food, grow longer, avoid walls and yourself. Arrow keys or swipe.
Klondike Solitaire
Classic Klondike Solitaire card game. Draw 1 or 3, undo moves, score tracking, best-score, win confetti.
Speed Test
Test your internet connection speed: download, upload, ping, and jitter.
Spelling Bee
NYT-style Spelling Bee: make words using the honeycomb letters, center letter required.
Sprite Sheet Animator
Upload a sprite sheet, set the frame grid and playback speed, and preview the animation loop in real time.
Statistics Calculator
Paste a list of numbers to instantly get count, sum, mean, median, mode, range, variance, and standard deviation.
Stopwatch
Precision stopwatch with lap tracking, split times, and pace calculator.
Sudoku
Classic 9×9 Sudoku with three difficulty levels, hints, timer and pencil marks.
Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more.
Thesaurus
Find synonyms, antonyms, and related words powered by the Datamuse API.
Tic-Tac-Toe
Classic Tic-Tac-Toe vs AI or two-player. Unbeatable AI with minimax algorithm.
Times Tables Sprint
Timed multiplication tables drill. Pick which tables (2–12) to practice and race the clock to answer as many as you can.
Timezone Converter
Convert a specific date & time between any two timezones instantly.
Tip & Split Calculator
Calculate tip, split bills by people or custom shares, with VAT/tax toggle.
Tower of Hanoi
Move the whole stack of disks from the first peg to the last, one disk at a time, without ever placing a larger disk on a smaller one.
Trivia Quiz
Test your knowledge with 200+ built-in trivia questions across 10 categories. No internet required.
Typing Game
Fun typing games: falling words, speed burst, and target practice to build typing skills.
Typing Test
Measure your typing speed (WPM), accuracy, and consistency with rich statistics.
Unit Converter
Convert length, weight, temperature, volume, speed, area, energy, pressure and more.
URL Encoder / Decoder
Encode or decode URLs and URL components, with a toggle between full-URI and component-safe encoding.
UUID Generator
Generate RFC 4122 v4 UUIDs in bulk, with optional uppercase and no-hyphen formatting, and one-click copy.
Whiteboard
A vector drawing pad with pen, eraser, shapes, arrows, and text tools, full undo/redo history, grid/dot backgrounds, and PNG or print-ready PDF export.
Word Chain
Build a chain of words where each word starts with the last letter of the previous word. Beat the clock!
Word Connections
Find groups of 4 words that share a hidden connection — inspired by NYT Connections.
Word Counter
Count words, characters, sentences, paragraphs, reading time and keyword density.
Word Scramble
Unscramble jumbled words with hints, timed rounds and score tracking.
Word Search
Interactive word search puzzle with multiple categories and grid sizes.
Word Unscrambler
Unscramble letters to find all possible valid English words, sorted by length.
Wordle
Guess the 5-letter word in 6 tries with color-coded feedback.
World Clock
Live clocks for 150+ world cities. Add/remove cities, search, and compare times.