Free Number Memory Test
See a number for a few seconds, then type it back. Each level adds a digit until you miss. Compare your digit span with the typical range.
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How to test your number memory
This is a digit span test, one of the simplest ways to measure short-term memory. A number appears briefly, disappears, and you type it from memory. The longer the number you can hold, the bigger your span.
- Press Start. A three-digit number appears with a bar showing how long it stays.
- Memorize the number before it disappears.
- Type it in the box and press Enter or Submit.
- If you are right, the next number is one digit longer. One wrong answer ends the game.
- Your score is the longest number you got right, compared with the typical range.
How the number memory test works
Each number is random and never starts with zero. It stays on screen for one second plus 0.6 seconds per digit, with a bar counting down, then disappears. The game starts at three digits and adds one digit after every correct answer.
Your best score is saved in this browser so you can track progress over days and weeks.
What's a good number memory score?
Most adults can repeat about 7 digits, give or take two. Practiced players who use chunking strategies often go well beyond that.
| Longest number | Rating |
|---|---|
| 10 digits or more | Exceptional |
| 8–9 digits | Above average |
| 6–7 digits | Typical |
| 5 digits or fewer | Below typical |
Useful tips and limitations
- Split long numbers into chunks of two or three digits, like a phone number: 739 482 15 is easier than 73948215.
- Say the digits silently in a rhythm while they are on screen.
- Try saying the number out loud in groups; hearing it can help some people more than seeing it.
Common questions
What is a digit span?
Your digit span is the longest list of digits you can repeat back correctly right after seeing or hearing it. It is a common measure of short-term memory.
Why does the number stay longer at higher levels?
Each extra digit adds a little more viewing time, so longer numbers are a fair memory challenge rather than a reading-speed test.
Why did I fail on a number I was sure about?
Swapping two neighbouring digits is the most common mistake. Check the last number and your answer shown under the result to see what happened.
Can I use the number keys on a phone?
Yes. The answer box opens the number keypad on phones and tablets.
Every test runs in your browser. Answers, scores and streaks are saved only in this browser on this device; nothing is uploaded and no account is needed. Clearing site data removes your saved scores.