Number Memory Test: Free Digit Span and Working Memory Test Online
Find out how many digits you can remember. A number flashes on screen, disappears, and you type it back. Each correct answer adds one more digit.
This free memory test is modelled on the digit span task used in psychology and cognitive research to measure short-term memory and working memory. The average adult remembers about 7 digits. How many can you hold?
Attempt: 1 / 2
Your best: –
Ready to test your memory?
Here is an example of what you will see:
You start with 3 digits and get two attempts at every length. Miss both and the test ends. It takes about 2 minutes.
Memorise these 3 digits
What was the number?
Type all 3 digits in order, then press Enter.
Correct
Your number memory span
digits
Average
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How the number memory test works
- Look at the number. A sequence of digits appears on screen for a few seconds. The more digits, the longer you get to study them.
- Memorise it. Repeat the digits silently or group them into chunks. Do not write anything down.
- Type it back. When the number disappears, enter every digit in the correct order.
- Level up. Each correct answer adds one digit. You get two attempts at each length, and the test ends when you miss both.
Your final score is your digit span: the longest number you recalled correctly. It is saved as your personal best in your own browser, so you can come back and try to beat it.
What is a digit span test?
A digit span test is one of the most widely used measures of short-term memory and working memory. Versions of it appear in the Wechsler intelligence scales and in many neuropsychological assessments. The person hears or sees a string of digits and repeats it back, and the string gets longer until they can no longer recall it accurately.
Working memory is the mental workspace you use to hold and manipulate information for a few seconds, such as remembering a phone number long enough to dial it. Because it underpins reading, mental arithmetic, learning and problem solving, it is one of the most studied abilities in cognitive psychology.
Number memory test scores: what is a good result?
In 1956 the psychologist George Miller described the typical human memory span as “seven, plus or minus two” items. That is why most healthy adults land between 5 and 9 digits on a number memory test.
| Digits recalled | Rating | What it usually means |
|---|---|---|
| 0 to 4 | Below average | Room to grow. Chunking and practice can help quickly. |
| 5 to 6 | Slightly below average | Close to the typical range. |
| 7 | Average | Matches the typical adult digit span. |
| 8 to 9 | Above average | A strong short-term memory result. |
| 10 to 11 | Excellent | Well above the typical range, often with a chunking strategy. |
| 12 or more | Exceptional | Rare without deliberate memory techniques. |
Scores vary with sleep, stress, distraction and the strategy you use, so treat any single result as a snapshot rather than a fixed measure.
How to improve your number memory and digit span
Use chunking
Group digits into chunks of two or three, such as 418 296 35. Your brain then holds three or four chunks instead of eight separate digits. Chunking is the single most effective technique for beating the average.
Turn numbers into meaning
Link chunks to things you already know: dates, ages, house numbers or football shirt numbers. Meaningful information is far easier to keep than abstract digits.
Try the memory palace method
Memory competitors place each chunk at a familiar location, such as the rooms of your home, and walk through them mentally to recall the sequence. It takes practice but scales to very long numbers.
Look after your brain
- Sleep well, because memory consolidation depends on it.
- Take the test somewhere quiet and free from interruptions.
- Stay hydrated and take regular exercise, both of which support concentration.
- Practise a little often rather than for one long session.
Why train working memory?
A larger working memory makes it easier to follow instructions, do mental maths, learn new languages and keep several ideas in mind at once. Brain training games like this one are a quick, free way to check in on your memory and to see whether your strategies are working. For a fuller picture of your thinking skills, try our other cognitive tests below.
Number memory test FAQs
What is a good score on the number memory test?
Most adults remember around 7 digits. A score of 5 to 9 is typical, 8 or more is above average, and 10 or more is excellent.
What is the average number memory span?
The average adult digit span is about 7 digits, give or take two. This comes from George Miller's well-known 1956 research on the limits of short-term memory.
Is this the same as the digit span test?
It follows the same basic idea as the forward digit span task used in psychology: see a number, then repeat it in order. This online version is an informal, self-guided game rather than a clinical assessment.
Does the number memory test measure IQ?
No. Working memory is one part of overall cognitive ability, and this test does not produce an IQ score. It gives you a fun, useful snapshot of your short-term memory.
How can I improve my number memory?
Break long numbers into chunks of two or three digits, link them to meaningful dates or numbers, and try the memory palace technique. Good sleep and a distraction-free space also help.
Why do I get two attempts at each level?
Clinical digit span tests usually give two trials per length, so one slip does not end the test. Get either attempt right and you move up to the next length.
Is the memory test free? Do I need an account?
It is completely free with no sign-up. The game runs in your browser, and your personal best is stored only on your own device.
This number memory test is provided for education and entertainment. It is not a clinical or diagnostic tool and does not measure IQ. If you are worried about your memory, please speak to a qualified health professional.