Free IQ Tools
Ten fast, free, no-sign-up tools. The cognitive tests measure your reaction speed and working memory (verbal, visual, and sequential) directly in the browser; the calculators are built on the same statistics that power professional IQ scoring — a normal distribution with mean 100 and standard deviation 15.
Reaction Time Test
Click when the box turns green. Five rounds, instant average, percentile rating.
Number Memory Test
How many digits can you hold? Test your digit span against the famous 7 ± 2.
Sequence Memory Test
Watch the tiles light up, repeat the pattern. One step longer every level.
Visual Memory Test
Tiles flash and vanish — click where they were. Grids grow until you miss.
Verbal Memory Test
Seen or new? Track a growing word list until three strikes end the run.
Digit Span Test (Clinical Format)
Digits one at a time, forward and backward — the same format the WAIS uses.
IQ Percentile Calculator
Enter any score and instantly see your percentile, rarity, and bell curve position.
How Rare Is Your IQ?
A shareable 1-in-X rarity card with real-world crowd comparisons.
SAT, ACT and GRE to IQ Converter
Research-based conversion between test scores and estimated IQ, in both directions.
Celebrity IQ Match
See which of 300+ famous figures share your estimated score.
Which Tool Should You Use?
Start with the percentile calculator if you already have a score from any test and want to know what it means in population terms. It answers the most common question we get: is my number good? If you want the same answer in a form built for sharing, the rarity checker reframes your percentile as a 1-in-X figure with a crowd comparison, which lands better in a group chat than a percentile does. The test score converter is for people who never took an IQ test but have an SAT, ACT, or GRE score on record: published research maps those scores onto the IQ scale with useful accuracy, and the tool runs the conversion in both directions. The celebrity matcher is the fun one: it pulls from the same database of 300+ estimated celebrity scores that powers our famous IQ profiles, with the same disclaimer that estimates are not verified results.
A note on precision: professional IQ tests carry a standard error of about 3 points, and online estimates carry more. Treat every output here as a well-grounded approximation, and read our methodology page for exactly how each number is produced.
Why These Tools Exist
IQ statistics are often quoted but rarely shown. These tools make the underlying math explorable: how percentiles map to scores, how rarity explodes past 130, how standardized tests relate to measured ability, and how your score compares to publicly estimated celebrity figures. Every number is computed live from the normal distribution rather than from rounded lookup tables, and the conversion tools cite their research sources directly on the page. If you do not have a recent score to plug in, our free 30-question IQ test produces an instant estimate, and the IQ percentile chart and score ranges guide provide the reference background.
MyIQScores Editorial Team
Editorial team focused on cognitive testing & psychometrics research
Last updated
May 10, 2026
MyIQScores content is written and maintained by our editorial team using published research in cognitive psychology and psychometrics as its source base. We label estimates as estimates, link primary sources where available, correct errors when readers flag them, and update pages as research or feedback warrants — see our corrections policy.