How to use the number memory test
- Press Start. A 3-digit number appears for a few seconds, with a bar showing how long you have left.
- Remember it. When it disappears, type it in and press Check (or Enter).
- If you're right, the next number has one more digit.
- If you're wrong, the test ends and shows the longest number you remembered.
How long each number is shown
Longer numbers stay on screen longer: 1 second, plus 0.4 seconds for every digit.
| Digits | Working | Time shown |
|---|---|---|
| 3 | 1 + 3 × 0.4 | 2.2 seconds |
| 5 | 1 + 5 × 0.4 | 3 seconds |
| 10 | 1 + 10 × 0.4 | 5 seconds |
Long numbers are shown in groups of three, like 1 234 567, to make them easier to read. You can type them with or without spaces.
Tips to remember longer numbers
- Chunk it. Remember 4 820 193 as three pieces, not seven separate digits.
- Say it in your head as you read it: "four, eight-twenty, one-ninety-three".
- Look for patterns: repeated digits, runs like 3-4-5, or numbers that mean something to you, such as a year.
- Type it straight away. The longer you wait, the more you forget.
Frequently asked questions
What is a good score?
The fairest comparison is with yourself. Try the test a few times and see whether chunking and practice help you remember more digits.
Is this a medical memory test?
No. It's a game for fun and can't tell you anything about your health. If you're worried about your memory, speak to a doctor.
Is my score saved?
Only while the page is open. We don't use cookies or browser storage, so it's forgotten when you close or reload the page.