More Free Tools

Calculate your exact age in years, months, and days. See total days lived, hours, your zodiac sign, and days until your next birthday.

Calculate percentages instantly. Find what percent X is of Y, calculate percent change, and work out percentage increases or decreases.

Calculate the final price after a discount. Enter the original price and discount percentage to see your savings instantly.

Calculate the tip on any bill. Split between multiple people and choose your tip percentage. Instant results, no sign-up needed.

A simple, fast online calculator for everyday math. Add, subtract, multiply, divide, with percent, sign change, and full keyboard support.

Full scientific calculator with trigonometry, logarithms, powers, roots, and memory functions. Works entirely in your browser.

Calculate how your investment grows with compound interest. See the final balance, total interest earned, and year-by-year breakdown.

Calculate your monthly loan payment, total interest, and total repayment amount for any loan amount, rate, and term.

Calculate your monthly mortgage payment including principal and interest. Enter home price, down payment, rate, and loan term.

Find out how much you need to save each month to reach your financial goal. Includes interest rate and existing savings.

Calculate your Body Mass Index (BMI) using height and weight in metric or imperial units. See your BMI category and healthy range.

Calculate your daily calorie needs (TDEE) based on age, gender, height, weight, and activity level. Includes weight loss and gain targets.

Calculate your estimated pregnancy due date from your last menstrual period. See key milestones and trimester dates.

Calculate your ideal body weight based on height and gender using four established medical formulas including Devine and Robinson.

Calculate your GPA by adding courses with grades and credit hours. Supports both letter grades and 4.0 scale inputs.

Find out what grade you need on your final exam to reach your target grade. Enter your current grade and the weight of the final.

Calculate total hours worked from start and end times. Add break time, multiple shifts, and an optional hourly rate for pay.

Calculate the exact number of days, weeks, months, and years between any two dates.

Find how many days until any event - Christmas, New Year, a birthday, or any custom date.

Convert numbers to Roman numerals and Roman numerals back to numbers. Supports 1 to 3,999.

Add, subtract, multiply, and divide fractions. Results are automatically simplified to lowest terms.

Simplify ratios, scale them up or down, and find a missing value in a proportion.

Calculate mean, median, mode, range, sum, and count for any set of numbers.

Calculate how much you need to save for retirement and whether your current savings are on track.

See how long it takes to pay off a debt and how much interest you pay at different monthly amounts.

Estimate your body fat percentage using the US Navy method. Supports metric and imperial units.

Calculate your estimated ovulation date and fertile window based on your cycle length and last period.

Estimate your blood alcohol content (BAC) based on drinks, weight, gender, and time elapsed.

Calculate the fuel cost for any trip based on distance, fuel efficiency, and gas price.

Compare two or more products by price per unit to find the best value. Great for grocery shopping.

Enter your income and see it split by the 50/30/20 rule into needs, wants, and savings. Adjust percentages, track actual spending, and see where you stand.

Add up what you spend daily and monthly, enter your income, and instantly see your total monthly spending, savings, and savings rate.

Estimate your take-home pay after federal tax, FICA, and deductions. See per-paycheck and annual breakdowns.

Estimate your federal tax refund or amount owed based on income, withholding, and filing status.

Convert colors between HEX, RGB, HSL, and HSB formats instantly with a live color preview.

Generate random colors with their HEX, RGB, and HSL values. Copy any format instantly.

Generate a QR code from any URL or text. Download as PNG instantly. Free, private, no sign-up.

Generate harmonious color palettes from any base color. Complementary, analogous, triadic, and more.

Roll any number of dice in any combination - d4, d6, d8, d10, d12, and d20. Instant results.

Flip a virtual coin and get heads or tails instantly. Flip multiple coins at once.

Get a random inspirational quote with one click. Hundreds of famous quotes from history's greatest minds.

Generate random numbers within any range. Generate multiple numbers and optionally keep them unique.

Can't decide? Get a random yes or no answer instantly. Includes a maybe option for tough decisions.

Test every key on your keyboard online. Choose from Windows full, TKL, 75%, 65%, 60%, Mac, and MacBook layouts.

Check your monitor for dead or stuck pixels using solid color screens. Red, green, blue, black, white, and more.

Upload a JPEG photo to check your camera's shutter count and view full EXIF camera details. Supports Canon and Nikon shutter count detection.

Ask the Magic 8-Ball any yes-or-no question and shake it for an answer. All 20 classic responses, just like the original toy.

Test your typing speed and accuracy with 10 different passages. Live WPM tracking and character-level feedback.

Build a structured pros and cons list for any decision. See the balance at a glance, then copy or print your list.

Generate baby name ideas by gender, origin, starting letter, and meaning. Find the perfect name for boys, girls, or unisex.

Generate unique username and gamertag ideas from your name or keywords. Choose a style and get instant results.

Generate fantasy names for characters, races, and places. Perfect for D&D, fiction writing, and worldbuilding.

Generate creative business and brand name ideas from your keywords. Pick a style and get instant suggestions.

Set New Year's resolutions, break them into milestones, and track your progress throughout the year.

Unscramble letters to find valid Scrabble and Words With Friends words. Supports wildcards and blank tiles.

Solve jumble word puzzles instantly. Enter the scrambled letters and find all possible words.

Free online alarm clock. Set an alarm time and get a browser alert and sound when it goes off.

Free countdown timer. Set hours, minutes, and seconds and get an alert when the time is up.

Free online stopwatch with lap times. Start, stop, and reset with a single click.

Convert time between any two cities or time zones instantly. Great for scheduling across countries.

Calculate the best time to go to sleep or wake up based on 90-minute sleep cycles.

Live countdowns to major holidays - Christmas, New Year, Thanksgiving, Halloween, and more.

Add names, spin the wheel, and let it decide. Great for random picks, giveaways, and classroom activities.

Paste a list of names and split them into random, balanced teams instantly. Set the number of teams, add custom team names, and re-shuffle as many times as you like.

Build a weekly chore schedule for your household. Add people and tasks, then randomize assignments fairly or set them manually.

Combine, trim, speed up, slow down, and add fade transitions to animated GIFs on a timeline, then export as a single GIF. Runs entirely in your browser.

Convert MOV, MKV, AVI, and WebM videos to MP4. Uses a fast lossless remux when possible and falls back to H.264/AAC re-encoding otherwise. Runs entirely in your browser.

A hub for the audio tools: extract audio from a video, replace a video's audio track, or trim audio to a range. Each opens its own tool.

Extract the audio from any video and save it as an MP3. Works with MP4, MOV, MKV, and WebM, entirely in your browser.

Swap a video's audio track for a voiceover, song, or any other audio. The video stream is kept exactly as-is, in your browser.

Cut an audio file down to the exact section you need using a waveform, and download it as MP3 or WAV, entirely in your browser.

Convert MP4 videos to WebM using VP9 video and Opus audio. Runs entirely in your browser.

Convert WebM videos to MP4 with H.264 and AAC for the widest playback compatibility. Runs entirely in your browser.

Convert MKV videos to MP4. Uses a fast lossless remux when possible and falls back to re-encoding otherwise. Runs entirely in your browser.

Convert AVI videos to MP4 for modern playback compatibility. Runs entirely in your browser.

Turn a MOV video clip into an animated GIF with adjustable frame rate and size. Runs entirely in your browser.

Turn an MP4 video clip into an animated GIF with adjustable frame rate and size. Runs entirely in your browser.

Cut a video down to the exact clip you need with a simple start and end range. Runs entirely in your browser.

Remove the audio track from a video in one click. Runs entirely in your browser.

Rotate a sideways or upside-down video 90, 180, or 270 degrees, or flip it horizontally or vertically. Runs entirely in your browser.

Shrink a video's file size with an adjustable quality slider, with before and after sizes shown. Runs entirely in your browser.

Resize a video to 1080p, 720p, 480p, Instagram Square, Instagram Story, or any custom dimensions. Runs entirely in your browser.

Grab a single still frame from any moment in a video and save it as a JPG or PNG. Runs entirely in your browser.

Crop a video by dragging a selection over a preview frame, then apply it to the whole clip. Runs entirely in your browser.

Add a text watermark to a video in any of 9 positions, with adjustable size, color, and opacity. Runs entirely in your browser.

Combine multiple video clips into one file, in any order you choose. Runs entirely in your browser.

Split a video into equal parts or at custom timestamps, and download all the parts as a ZIP. Runs entirely in your browser.

Speed up or slow down a video from 0.25x to 4x, with audio pitch handled automatically. Runs entirely in your browser.

Play a video backwards. Best for short clips, since reversing needs to hold the whole video in memory. Runs entirely in your browser.

Convert audio between MP3, WAV, OGG, M4A, and FLAC. Runs entirely in your browser.

Convert OGG audio files to MP3 for playback on any device or player. Batch convert many files at once, entirely in your browser.

Shrink an audio file's size with a selectable bitrate, with before and after sizes shown. Runs entirely in your browser.

Combine multiple audio files into one track, in any order you choose. Runs entirely in your browser.

Speed up or slow down an audio track from 0.5x to 3x. Runs entirely in your browser.

Boost or reduce an audio track's volume, or normalize it to a standard loudness level in one click. Runs entirely in your browser.

Generate strong, random passwords with custom length and character sets. Includes strength indicator and copy button.

Encode text or files to Base64 and decode Base64 strings back to plain text. Supports URL-safe mode.

Convert any number into English words. Supports up to trillions, ordinal mode, and currency format.

Check your screen resolution, viewport size, device pixel ratio, color depth, browser, and OS instantly.

Calculate the aspect ratio of any dimensions, or find a missing width or height from a known ratio.

Send a secret note that self-destructs after being read. Encrypted in your browser, shared as a single-use link.

Paste a long script and split it into copy-ready chunks of any character limit. Copy each part one at a time with a single click.

A multi-page document editor with text formatting, tables, images, margins, and find and replace. Print or save as PDF straight from your browser.

Classic card-matching memory game with three difficulty levels. Tracks your moves and time, and saves your best score so you can try to beat it.

Play Tic-Tac-Toe against a friend or the computer. Choose an easy opponent or an unbeatable one, and track your win, loss, and draw record.

Classic word-guessing game with Animals, Countries, Food, and Everyday Objects categories. Guess letters before you run out of tries.

Slide and merge tiles to reach 2048. Play with arrow keys or swipe on mobile, and try to beat your best score.

Generate a word search puzzle from a theme or your own word list, then click the first and last letter of a word to find it.

Play Sudoku with three difficulty levels. Every puzzle is generated with a guaranteed unique solution, with notes mode and a mistake checker.

A new 5-letter word puzzle every day. Guess the word in 6 tries, build your streak, and share your result.

Classic Minesweeper with three difficulty levels. Your first click is always safe, flag mode works great on mobile, and your best time is saved.

The classic 8-puzzle and 15-puzzle sliding tile games. Every shuffle is guaranteed solvable, with a move counter and best score saved.

Click a light to toggle it and its neighbors. Turn every light off to win, with three difficulty levels and your best move count saved.

Watch the color and sound pattern, then repeat it back. Each round adds one more step. How many rounds can you remember?

Click as fast as you can the moment the screen turns green. Catches false starts, tracks your average, and saves your best reaction time.

Take turns drawing lines between dots. Complete the fourth side of a box to claim it and get an extra turn. Most boxes wins against the computer.

Drop pieces to connect four in a row before the computer does. The AI thinks several moves ahead, so it plays a genuinely strong game.

Crack the hidden 4-color code in 10 guesses or fewer using black and white peg feedback. Tracks your wins, losses, and fewest guesses to solve.

Classic arcade Snake. Steer with arrow keys or swipe on mobile, eat food to grow, and avoid the walls and your own tail. Best score saved.

Move the whole stack of disks to the last peg in the fewest moves possible. Choose from 3 to 7 disks and compare against the mathematical minimum.