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Memory Test Online
This memory test online measures how many numbers you can hold in your head at once. Watch a sequence of digits flash up one at a time, then type it back in the same order. Get it right and the next round adds another digit; get it wrong and the test ends. Your score is the longest sequence you recalled, and your best score is saved in your browser so you can try to beat it.
Press Start to begin round 1 — 3 digits.
Your sequence, digit by digit
Each tile is one digit of the sequence. The tiles light up one at a time as the digits appear, then you type the whole sequence back from memory.
How it works
Short-term memory is the brain's scratch pad: it holds a small amount of information for a short time, about 15 to 30 seconds, unless you keep repeating it to yourself. The classic finding, from psychologist George Miller in 1956, is that most people can hold about seven items, give or take two. This test measures that limit directly. It shows you a sequence of digits, one at a time, and asks you to repeat it. The sequence grows by one digit each round, so the test finds the exact point where your memory runs out.
Round 1 shows 3 digits. Each digit appears in the big display for about 900 milliseconds, with a short blank gap between digits, so you have time to see each one but not to write it down — that is the point. When the last digit disappears, the answer box appears. Type the digits in the same order and press Check. If you are right, the next round shows one more digit. If you are wrong, the test ends and shows you the sequence you missed, so you can see where it went wrong.
Your score is the longest sequence you recalled correctly, and the rounds completed count is the score minus two, because round 1 starts at 3 digits. If you pass the 3-digit, 4-digit, 5-digit, and 6-digit rounds and fail on 7 digits, your score is 6 and you completed 4 rounds. Most adults score between 5 and 9. A score of 5 or 6 is normal, 7 or 8 is good, and 9 or more is excellent. Your best score is saved in your browser's local storage, so it is still there next time you visit — try to beat it, but remember that tiredness, stress, and distraction move the number up and down from day to day.
There are honest tricks that help. Chunking is the best one: instead of remembering 4, 7, 2, 9 as four separate items, remember 47 and 29 as two chunks, which uses less of your scratch pad. Saying the digits out loud or repeating them silently — rehearsal — keeps them alive past the 30-second limit. And focus matters: looking away or multitasking during the show phase is the fastest way to lose a digit. None of these tricks changes your brain overnight, but they are the same techniques memory champions use, scaled down to a few digits.
Worked example
Here is a sample run of the test, so you know exactly what to expect. The digits are random every time, so your run will show different numbers — the rounds and the scoring work the same way.
Round 1: The test shows 3 digits, one at a time: 4, then 7, then 2. You type 472 and press Check. Correct — your score is 3.
Round 2: The test shows 4 digits: 9, 1, 5, 8. You type 9158. Correct — your score is 4.
Round 3: The test shows 5 digits: 3, 6, 0, 2, 4. You type 36024. Correct — your score is 5.
Round 4: The test shows 6 digits: 8, 3, 1, 7, 5, 2. You type 831752. Correct — your score is 6.
Round 5: The test shows 7 digits: 5, 9, 2, 6, 1, 4, 8. You type 5926143 — you swapped the last two digits. Wrong, and the test ends.
The result is score 6 — the longest sequence recalled — with 4 rounds completed, and the best score is saved. Press Start and play your own run: round 1 is 3 digits, each correct answer adds a digit, and the test ends on your first mistake.
FAQ
How does the memory test work?
Press Start and the test shows you a sequence of numbers, one digit at a time. When the sequence finishes, type the digits back in the same order and press Check. Get it right and the next round adds one more digit. Get it wrong and the test ends, and your score is the longest sequence you recalled correctly. Your best score is saved in your browser so you can try to beat it next time.
What is a good memory test score?
Most adults can hold about 7 digits in short-term memory, give or take 2, which is the classic finding from memory research. A score of 5 or 6 is normal, 7 or 8 is good, and 9 or more is excellent. Scores vary with tiredness, stress, and practice, so a single result says less than the trend over several tries.
Can I improve my memory with this test?
Practising helps a little, mostly because you learn tricks. Grouping digits into chunks, such as remembering 47 and 29 instead of 4, 7, 2, 9, makes longer sequences easier, and saying the digits out loud or picturing them can help too. Sleep, exercise, and attention matter more than any single game, so treat the test as a fun measure, not as a treatment.
Why do I forget the sequence so fast?
Short-term memory holds information for only about 15 to 30 seconds unless you rehearse it, and it holds only a few items at once. That is normal: the brain is built to filter most of what it sees. Repeating the digits silently to yourself, chunking them into groups, and focusing on the screen instead of multitasking all help the sequence stay put.
Is my best score stored anywhere?
Your best score is stored in your browser's local storage, on your own device. Nothing is sent to a server and no account is needed. It will be lost only if you clear your browser data or switch to a different browser or device.