Highest IQ in the World
Record holders, disputed claims and what the numbers really mean
Names like Marilyn vos Savant, Terence Tao and Christopher Langan appear on every highest-IQ list, but the numbers behind them come from very different tests with very different scales.
Start free testExplore related topics: Genius IQ Test, Am I Smart?, What Was Einstein's IQ?.
Why choose this test
Documented records
Verified high scorers versus self-reported internet claims.
Why 200+ is doubtful
Standard tests lose reliability far below that level.
Frequently asked questions
Marilyn vos Savant was listed by Guinness with 228 on a childhood ratio scale; modern deviation scores are not directly comparable.
Very few people score that high, so there is not enough norming data to measure the extreme tail accurately.
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