Free online tools
Simple calculators, converters and device tests. Everything runs in your browser — nothing is uploaded.
Date and time
Work out exact ages, count the days between two dates and find a date in the future or past.
- Age Calculator
Find your exact age in years, months and days, and how long until your next birthday. - Date Calculator
Count the days between two dates, including business days, or add and subtract days from a date.
Text
Count words and characters for essays and posts, and measure your typing speed.
- Typing Speed Test
Type random common words against the clock and see your words per minute and accuracy. - Word Counter
Count words, characters, sentences and paragraphs as you type, with reading time.
Images
Compress, resize and convert photos without uploading them anywhere.
- HEIC to JPG Converter
Turn iPhone HEIC photos into JPG or PNG files right in your browser, many at a time. - Image Compressor and Resizer
Shrink photos and images in bulk, resize them and convert to JPG, PNG or WebP — without uploading.
Money
See how savings grow with compound interest and regular monthly deposits.
- Compound Interest Calculator
See how savings grow with compound interest and monthly deposits, year by year.
School
Calculate your semester and cumulative GPA from letter grades and credits.
- GPA Calculator
Work out your semester and cumulative GPA on the 4.0 scale from letter grades and credits.
Device tests
Check your keyboard, microphone, webcam and screen, and test your clicking speed and reflexes.
- CPS Test (Clicks Per Second)
Click as fast as you can for 1, 5 or 10 seconds and see your clicks per second. - Dead Pixel Test
Fill your screen with solid colors to spot dead, stuck and hot pixels in seconds. - Keyboard Tester
Press each key and watch it light up on the on-screen keyboard to find dead or stuck keys. - Microphone Test
See your microphone level live, switch between mics and record a short clip to hear yourself. - Reaction Time Test
Wait for the box to turn green, then click as fast as you can. Five tries, then your average. - Webcam Test
Preview your camera, see the real resolution and frame rate, and save a snapshot. - White Screen
A plain white (or any color) screen that fills your display, with adjustable brightness.
Fun and games
Pick a random name, prize or decision with a fair spinning wheel.
- Spin the Wheel
Type your options, spin the wheel and let chance pick a winner fairly.