Test your short-term memory
Your short-term memory can hold only a few items at once – for numbers, most adults manage about seven digits. This number memory test shows a number for a moment, hides it, and asks you to type it back. Get it right and the next number has one more digit; one mistake ends the game.
Choose the starting length and how long numbers stay visible. Your best result is saved in this browser so you can watch it improve. Tip: split long numbers into groups of three, like a phone number.
How to use
- Press Start and memorise the number before the bar runs out.
- Type it into the box and press Check (or Enter).
- Right? The next number is one digit longer.
- One mistake ends the round – try to beat your best!
Ideas for using it
- Brain warm-up. a two-minute challenge before studying.
- Classroom. who in the class can remember the longest number?
- Family challenge. take turns and compare results.
- Memory training. practise the grouping trick and watch your score grow.