What is the highest IQ ever recorded?

There is no single, reliably verified record. Scores far above about 160 cannot be measured accurately, because there are too few people at that extreme to norm a test against. The very large numbers you see quoted are almost always old ratio scores or unverified claims, not results from a modern, standardized test.

What was Albert Einstein's IQ?

Einstein never took a modern IQ test, so any specific number is an estimate. The figure of about 160 often attached to his name is folklore, not a measured result — it is a guess made long after the fact.

What is Elon Musk's IQ?

No verified, published IQ score exists for Elon Musk. The numbers circulated online are speculation rather than results from a supervised, standardized test.

What IQ is considered genius level?

There is no official "genius" threshold in psychology. The word is used loosely in popular writing, often for scores above 140, but serious test publishers avoid it because it claims more than a reasoning score can support.

What Is the Highest IQ in the World? Records, Einstein & the Genius Myth

There is no single, verified highest IQ in the world. The eye-catching numbers attached to famous names are mostly estimates, old-style scores or outright folklore — not results from a modern, standardized test. Here is what the records actually show, why the extreme figures are unreliable, and what a genuinely high score does and does not mean.

Why there is no reliable "world record" IQ

An IQ score only has meaning when it is compared against a large, representative sample of people the same age. Out at the far edge of the scale there simply are not enough people to build that comparison, so tests cannot distinguish, say, a "180" from a "200" in any meaningful way. This is why Guinness World Records retired its "Highest IQ" category back in 1990 — the scores being submitted were not reliably comparable. Any claim of an IQ in the 200s should be read as a historical curiosity, not a measurement.

Einstein, Musk and the famous-IQ myth

Almost every "genius IQ" attached to a famous person is a retrospective estimate, not a real test result. Einstein never sat a modern IQ test; the ~160 figure is a guess. Published numbers for living figures such as Elon Musk are speculation, not supervised scores. These numbers spread because they make good headlines — treat them as folklore rather than data.

The names you will see cited

Marilyn vos Savant was listed in the Guinness Book for the highest recorded IQ before the category was retired — based on an old ratio-scored childhood test, which is not comparable to a modern adult score.
William James Sidis is often credited with an IQ of 250–300, but no verified test result supports it; the figure is unsourced.
Terman's "Termites" — a famous long-term study of high-IQ children (Terman & Oden, 1947) — showed that even a very high childhood score does not guarantee later eminence.

What "genius level" actually means

Psychology has no scientific cut-off for "genius," and test publishers avoid the word. In popular writing it is pinned somewhere above 140, but that is a convention rather than a measured boundary — the same caution we explain in what a high IQ is. A reasoning score describes one slice of ability; it says nothing about creativity, drive or achievement (Neisser et al., 1996).

What a genuinely high score tells you

The rarity of high scores comes straight from the bell curve: about 2% of people reach 130, and each step beyond that gets dramatically rarer, as we cover in the IQ bell curve and map out in the IQ scale explained. That is also why high-IQ societies set their bar at the 98th percentile rather than at some giant number — see what IQ you need for Mensa. And any single result carries a margin of error, especially on an unsupervised test (how accurate online IQ tests are).

Curious where your own reasoning lands on the scale? Our age-normed free IQ test gives an estimate and the matching percentile — a far more useful number than any celebrity guess.