Bill Gates IQ

Gates has never published an IQ score. The 160 often quoted online is an extrapolation from his SAT, widely reported as 1590 out of 1600. SAT-to-IQ conversions are rough, so LifeScore uses a working range of 150 to 165 and treats every single number as an estimate.

Gates is widely reported to have scored 1590 out of 1600 on the SAT in the early 1970s, with a perfect 800 in maths. We have not seen a primary document for it, so treat it as well reported rather than verified. It helped him into Harvard in 1973.

Gates has not published an MBTI result that we could find. Online typing communities usually place him as INTJ or INTP, which is guesswork from interviews. In Big Five terms his public record suggests high openness, he says he reads about 50 books a year, and high conscientiousness.

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No IQ test result for Gates has been published. The 160 seems to come from converting his reported SAT score into an IQ, a common move on celebrity IQ lists.

Conversions like that are shaky. The SAT measures learned reasoning and knowledge at 17, and scores at the very top bunch together, so a 1590 cannot separate very high scorers well.

The concrete evidence is still strong: a near-perfect reported SAT, a published maths paper as an undergraduate and a software company built in his early twenties.

See how the other famous IQ numbers trace back in where famous IQ numbers come from.

Gates is known for absorbing material in intense bursts. He takes 'think weeks' alone with stacks of reading, a habit he has described many times, and in the early Microsoft years he reviewed code line by line.

What supports it

• He is widely reported to have scored 1590 out of 1600 on the SAT before entering Harvard in 1973.
• As a Harvard student he worked on the pancake sorting problem, published in 1979 in Discrete Mathematics with Christos Papadimitriou.
• He co-founded Microsoft in 1975 after writing a BASIC interpreter for the Altair computer with Paul Allen.

What it cannot prove

• SAT scores measure learned reasoning at 17 and convert to IQ only roughly.
• Gates is living, and LifeScore has no access to any private test record.
• Business success reflects timing, capital, teams and luck as well as ability.

Bill Gates's IQ is represented here by a retrospective estimate of 155+, not a verified test result. Bill Gates is best known for exceptional analytical thinking. The useful question is what the surviving evidence shows, not whether a precise modern score can be recovered.

Analytical mind with extreme competitiveness in business. High conscientiousness with systematic approach to problems. Later-life pivot to philanthropy.

The dominant archetype here is The Builder. This archetype shapes decision patterns: what feels natural, what creates friction, and what blind spots tend to emerge.

Estimated IQ is 155+. This is a rough estimate based on documented accomplishments and contemporary accounts, not a literal measurement.

Gates's upper bound for pancake sorting stood as the best known for about 30 years.

If Bill Gates were alive today, a modern parallel in operating style might be Satya Nadella. The comparison is about working style, strengths and blind spots, not accomplishment level or IQ.

Read Satya Nadella's profile

Bill Gates' estimate of 155+ falls in the genius level IQ range. Want your own number rather than Bill's? Take the free IQ test or the quick IQ test. See what an IQ of 155 means, place it on the IQ chart or check how rare it is with the IQ rarity calculator.