Number memory test

Q: How many digits can people usually remember?

The figure most often quoted is a span of around seven digits, but differences between people and between individual attempts are large. Treat it as a rough number, not a limit.

Q: Is grouping the digits cheating?

It is not, most people who get further play that way. The game measures how long a string you can repeat, not which technique you use to do it.

Q: Why does the game not end on the first mistake?

A typo is not the same as memory failing, so you get a second attempt at the same length with a new number. Only the second mistake ends the game.

Q: Does a low score mean a memory problem?

No. This is one narrow ability measured in a browser under random conditions. It is not a psychological or medical examination.

A number appears for a moment, then you type it from memory. Each round adds one digit.

Number memory

The number shows for a few seconds, then disappears.
Type it exactly as you saw it.
Every next round the number is one digit longer.
The first mistake is forgiven, the second ends the game.

About this game

Number memory shows how long a string of digits you can hold in your head before writing it down. The score is the length of the longest number you managed to repeat.

Most people land around seven digits, but the spread is wide and strategy matters. Anyone who groups the digits into pairs or triples in their head gets further than someone repeating them one by one.

This is one narrow ability, not memory as a whole. The comparison with other players is a rough guide and replaces no examination.

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How to read your result

The score is the length of the longest string you repeated correctly. It starts at three digits and every successful round adds one. Most people get to somewhere around seven digits, but the spread is wide and strategy matters a lot.

When you slip up you get one more attempt at the same length with a new number, and a second mistake ends the game. The score therefore rests on two attempts at that same length, and a difference of one digit between two games is normal. The bands in the table are a rough split, not a published norm.

	digits
Excellent recall	≥ 9	A long string. Usually the result of grouping the digits.
Strong recall	7-8	An above-average span, holding above the usual mark.
Average span	5-6	The length most attempts end at.
Shorter span	< 5	A shorter string. Often a different strategy or a quieter room is all it takes.

What affects the result

Noise and tiredness hurt the most. One notification while the number is on screen and the string is gone. It also matters whether you say the digits out loud or only in your head, and how quickly you can type them before they fade.

The most common strategy is grouping: instead of nine separate digits, hold three groups of three, the way you would read out a phone number. Beyond that it helps to keep the same rhythm while repeating them, to start typing the moment the number disappears, and not to invent stories around the digits - there is far too little time for that.

Frequently asked questions

How many digits can people usually remember?

The figure most often quoted is a span of around seven digits, but differences between people and between individual attempts are large. Treat it as a rough number, not a limit.

Is grouping the digits cheating?

It is not, most people who get further play that way. The game measures how long a string you can repeat, not which technique you use to do it.

Why does the game not end on the first mistake?

A typo is not the same as memory failing, so you get a second attempt at the same length with a new number. Only the second mistake ends the game.

Does a low score mean a memory problem?

No. This is one narrow ability measured in a browser under random conditions. It is not a psychological or medical examination.

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How we calculate the comparison

The bands next to your result come from fixed thresholds that are the same for every player. The percentile is calculated from the scores of other players on this site, not from published norms, and it only appears once enough runs have been stored. The typing test has its own comparison for each language version, because the word pools differ. For the other games we pool all languages together.

Measuring conditions differ from person to person - a different mouse, a different screen, a different level of focus. So treat the comparison with others as a rough guide. The most useful number is your own history of recent attempts, which sits right next to the result.

These games are for practice and rough comparison. They are not psychological or medical diagnostics, and the result says nothing about your intelligence or your health.