Number Memory Test: What's Your Digit Span?
A number appears; memorize it before it disappears, then type it back. Each round adds a digit. The average adult taps out around 7 — the "magical number" of working memory.
What Your Digit Span Means
This test measures the storage capacity of your working memory — the mental workspace where you hold information while using it. George Miller's classic 1956 paper put the typical capacity at "seven, plus or minus two" items, and modern testing agrees: most adults manage 6–8 digits forward, and reaching 10 or more without technique is genuinely uncommon.
Working memory matters far beyond number games: it's one of the four index abilities in professional IQ testing (the WAIS Digit Span subtest works almost exactly like this tool), and it correlates strongly with reasoning, reading comprehension, and mental arithmetic. Read more in our guide to working memory and IQ.
Digit Span Benchmarks
- 5 or fewer — below typical; retest rested before reading anything into it
- 6–8 — the normal adult range; 7 is the classic average
- 9–10 — excellent natural span, top ~10%
- 11–12 — rare without chunking strategies
- 13+ — almost always technique (chunking, number-image systems)
Frequently Asked Questions
MyIQScores Editorial Team
Researchers in cognitive psychology, psychometrics & educational science
Last updated
May 10, 2026
All content on MyIQScores is reviewed for scientific accuracy against peer-reviewed research in cognitive psychology and psychometrics. Our editorial team cross-references each article with published literature before publication and updates pages whenever new research warrants a revision.