N-Back Test

Play the classic 2-back working memory test. Letters flash on screen — hit match when the current letter equals the one shown two steps ago. Science-backed cognitive training.

Medium 3 min Memory

2-Back working memory test

Letters flash one at a time. Your job: when the letter on screen equals the letter that appeared two steps earlier, press Match. Otherwise press No Match. You have ~2 seconds per letter.

Trial / Correct:

correct · accuracy

Score = correct answers × 25. Each trial that is a match must be caught, each non-match must be ignored.

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Aug 09

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About N-Back Test

Play the classic 2-back working memory test. Letters flash on screen — hit match when the current letter equals the one shown two steps ago. Science-backed cognitive training.

This free tool is designed to be quick, fun, and effective. It runs entirely in your browser, so your data never leaves your device and no account is required. Play once or come back daily to track your progress and improve your score.

N-Back Test - Frequently Asked Questions

The n-back test shows a sequence of items one at a time. You must respond when the current item matches the one shown n steps earlier. The 2-back version requires matching two positions back.

Research suggests n-back training improves working memory and fluid intelligence. It is one of the most widely studied cognitive training tasks in the scientific literature.

For a 20-trial 2-back round, 80-90% accuracy is solid. Consistent training typically lifts accuracy from around 70% to over 90% within a few weeks.

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