How many digits can most people remember?

Around seven is the well-known average, which is why phone numbers settled near that length. Many people manage between six and nine. Reaching double figures usually means you are grouping the digits into chunks rather than holding each one separately.

Chunking is bundling digits into small groups, such as reading 491 7263 as two pieces instead of seven loose numbers. Your memory tracks a handful of chunks far more easily than a long string, so it is the single best way to push your span higher.

Why do I do worse when distracted?

Holding a number relies on rehearsing it in the moment, and any interruption knocks that rehearsal off. A quiet run with full attention almost always beats one where your mind wandered.

Are my best scores saved?

Your best result for each game is kept in your browser so you have something to beat next time. It lives only on this device, so clearing your browser data or switching to another device starts you fresh. Nothing is tied to an account because there is no account.

Does anything I do here get sent to a server?

No. Every game runs locally in your browser. Your scores and any text you type stay on your own device, nothing is uploaded, and nothing is logged or stored by us. Once the page has loaded it keeps working even if you go offline.

Number Memory Test

A number flashes on screen for a few seconds, then disappears and you type it back. Each round adds a digit, so the number gets longer until you miss. This free number memory test shows how many digits you can hold at once. The average person manages around seven, the classic "magic number". In your browser, no sign-up.

No sign-up, ever
100% free
Nothing uploaded
Works offline after first load
Scores stay on your device

Read the guide: How Many Digits Can You Remember?

Number MemoryBest: —

Number MemoryA number flashes up — memorise it, then type it back. One more digit each round.

How to use it

1
Memorise the number

A number appears with a short countdown. Take it in before it vanishes.
2
Type it back

Enter the digits you remember. Get it right and the next number is one digit longer.
3
Find your span

A wrong answer ends the run. Your score is the longest number you recalled correctly.

When it comes in handy

Digit span check

See how your memory compares with the classic "seven, give or take two" rule.

Memory practice

Train chunking — the trick of grouping digits — and watch your span grow.

Quick challenge

A fast, satisfying test to share and compare with friends.

Instant & 100% private — nothing is uploaded

Every game runs right here in your browser, and your best scores are kept on your own device. Nothing is sent to a server, so there is no sign-up and no account. Load the page once and it keeps working even if you go offline.

Frequently asked questions

How many digits can most people remember?: Around seven is the well-known average, which is why phone numbers settled near that length. Many people manage between six and nine. Reaching double figures usually means you are grouping the digits into chunks rather than holding each one separately.
What is chunking?: Chunking is bundling digits into small groups, such as reading 491 7263 as two pieces instead of seven loose numbers. Your memory tracks a handful of chunks far more easily than a long string, so it is the single best way to push your span higher.
Why do I do worse when distracted?: Holding a number relies on rehearsing it in the moment, and any interruption knocks that rehearsal off. A quiet run with full attention almost always beats one where your mind wandered.
Are my best scores saved?: Your best result for each game is kept in your browser so you have something to beat next time. It lives only on this device, so clearing your browser data or switching to another device starts you fresh. Nothing is tied to an account because there is no account.
Does anything I do here get sent to a server?: No. Every game runs locally in your browser. Your scores and any text you type stay on your own device, nothing is uploaded, and nothing is logged or stored by us. Once the page has loaded it keeps working even if you go offline.