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Number Memory Test – How Many Digits Can You Remember?

Test your short-term memory: remember a number shown for a few seconds, then type it. Each level adds a digit. See how you compare to the average.

  • Free, no sign-up
  • Runs in your browser, nothing uploaded

About the Number Memory Test

Measure your working memory for numbers. A number flashes on screen, you type it back, and each correct answer adds one more digit.

Key features

  • Starts at 1 digit and adds one each level
  • More viewing time for longer numbers
  • Shows exactly which digits were wrong
  • Best score saved in your browser
  • Works on phone and computer
  • No sign-up

How it works

A number appears for a few seconds and then disappears. Type it back exactly. If you're right, the next number has one more digit. One mistake ends the game, and your score is the longest number you remembered.

Typical scores

Digits rememberedRating
5 or fewerBelow average
6 to 8Average
9 to 10Good
11 or moreExcellent (probably using chunking)

Memory game, colour word test, and reaction time test.

How to use the Number Memory Test

  1. Choose a mode or difficulty, or keep the default.
  2. Press Start (or just click the board) and play with your mouse, finger or keyboard.
  3. Your score, time and moves are shown as you play.
  4. Your best score is saved in this browser, so you can try to beat it next time.

Frequently asked questions

How many digits can most people remember?

Around 7, give or take 2. This is the classic finding from psychologist George Miller's 1956 paper. Remembering 8 or 9 digits is good, and 10 or more usually means you're using a memory technique.

How long is the number shown?

One second plus 0.6 seconds per digit, so 7 digits are shown for 5.2 seconds.

How can I remember more digits?

Group them into chunks, like a phone number: 4 8 2 9 1 7 3 becomes 482-91-73. Saying the chunks with a rhythm helps, as does linking numbers to dates or ages you know.

Does this measure intelligence?

No. It measures short-term (working) memory for numbers, which is just one part of thinking ability, and it improves with practice.

Are the games free?

Yes, all games are completely free, with no sign-up, download or in-game purchases.

Do the games work on phones?

Yes. Every game works with touch as well as a mouse and keyboard, and the boards resize to fit your screen.

Where are my best scores saved?

In your browser on this device. They're never sent to our servers, and clearing your browser data resets them.

What are the daily puzzles?

Sudoku and Word Scramble have a puzzle of the day that is the same for everyone and changes at midnight in your time zone, so you can compare results with friends.

Last updated:

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