What is Steve Ballmer’s IQ?
A reported 800 on the SAT math section, a reported top-100 Putnam finish and no IQ test on record.
Steve Ballmer has no published IQ score; our Steve Ballmer IQ estimate is 135–150 on the usual scale (mean 100, SD 15), as of November 2026. It rests on a reported SAT math score of 800, a reported top-100 finish in the Putnam mathematics competition and a Harvard degree, not on an IQ test. None of those numbers comes from a score report.
Steve Ballmer’s estimated IQ
- A reported score of 800 on the SAT math section, with valedictorian honors at Detroit Country Day School and a National Merit Scholar award (Wikipedia). The Harvard Crimson reported in 2002 that he scored a 1600 on his SATs. No score report has been published.
- A reported top-100 finish in the William Lowell Putnam Mathematical Competition as a college sophomore (The Harvard Crimson, 2002); Wikipedia adds that he scored higher than Bill Gates. No official Putnam result list is cited for those years.
- A Bachelor of Arts in applied mathematics and economics from Harvard, magna cum laude, in 1977 (Wikipedia; The Harvard Crimson).
- This site’s SAT conversion: the SAT is not an IQ test, and even the 99.9th percentile predicts only about 137, with about 12 points of error either side.
A converted SAT score is not an IQ test, and these results are reported, not documented: the math score comes from Wikipedia, the 1600 from one line in a newspaper profile, and the Putnam finish from the same newspaper without a year or a rank. A math-only 800 also says little about verbal ability. The range is a band read from reported numbers, so it is wide and low in confidence.
- Born
- March 24, 1956, Detroit, Michigan
- High school
- Detroit Country Day School; valedictorian and National Merit Scholar (Wikipedia)
- SAT, as reported
- 800 on the math section (Wikipedia); 1600 total (The Harvard Crimson, 2002); no score report published
- Putnam, as reported
- Top 100 as a college sophomore (The Harvard Crimson, 2002); year and rank not given
- University
- Harvard, Bachelor of Arts in applied mathematics and economics, magna cum laude (1977)
- Microsoft
- Joined in 1980; chief executive January 2000 to February 2014
- Circulating figure
- No IQ figure found; reported SAT and Putnam results circulate
What an IQ of 135–150 actually means
Set the claim aside for a moment. If someone genuinely scored in this range, here is what that would represent.
| Score range | Classification | Share of people | What it indicates |
|---|---|---|---|
| 85 – 114 | Average | ~68% | The range most people fall into. |
| 115 – 129 | Above average | ~13.6% | Roughly one person in seven. |
| 130 – 144 | Gifted | ~2% | The threshold most high-IQ societies use. |
| Above 144 | Highly gifted | ~0.1% | Figures above this range are extrapolated from the curve rather than measured. |
Percentages are approximate and describe a normal distribution. The same number means different things on tests with different standard deviations.
Thirty questions gives you a measured position on this exact scale — your score, your percentile and the ability breakdown behind it.
Find out in 30 minutes →Who Steve Ballmer is
Who is Steve Ballmer? Steven Anthony Ballmer was born on March 24, 1956, in Detroit, Michigan. He joined Microsoft in 1980 as its first business manager, served as chief executive from January 2000 to February 2014 and stayed on its board until August 2014 (Wikipedia).
What does Steve Ballmer’s education show? He was valedictorian of Detroit Country Day School, then took a Bachelor of Arts in applied mathematics and economics at Harvard, magna cum laude, in 1977 (Wikipedia; The Harvard Crimson). He later began an MBA at Stanford and left in 1980 to join Microsoft. Degrees and honors are evidence of ability, not a score.
Is Steve Ballmer a genius? “Genius” is a label, not a score. His documented record is academic and reported: a top mathematics score, a Putnam finish and a Harvard degree with honors. See other business leaders we have checked, or compare your own result on the same scale with the IQ Metrics test.
By Elora Mercer, Celebrity Research WriterFigures checked by Leon Falkner, Data & Research AnalystReviewed by Aarav Vardhan, Editor-in-Chief · Last reviewed November 2026
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Steve Ballmer: the documented record
The estimate above rests on this record. Every entry here is a matter of public fact, which is more than can be said for the number itself.
- 1956Born March 24 in Detroit, Michigan.
- 1977Graduates from Harvard, magna cum laude, with a Bachelor of Arts in applied mathematics and economics.
- After 1977Works two years as an assistant product manager at Procter & Gamble, then starts an MBA at Stanford.
- 1980Leaves Stanford’s MBA program and joins Microsoft on June 11.
- 1998Becomes president of Microsoft.
- 2000Replaces Bill Gates as chief executive on January 13.
- 2002The Harvard Crimson profile reports his SAT and Putnam results.
- 2014Retires as chief executive on February 4 and leaves the board in August.
Why no figure circulates
Following a claim back to its first appearance is the part almost nobody does — and it is what most people are actually asking.
Steve Ballmer IQ searches lead to test scores that are not IQ scores. Wikipedia says he graduated from Detroit Country Day School “with a score of 800 on the mathematical section of the SAT,” and a 2002 Harvard Crimson profile says he “scored a 1600 on his SATs.” We found no score report and no IQ test result for him. For how such labels turn into numbers, see where celebrity IQ numbers come from.
Did Steve Ballmer score a perfect SAT math? As reported, yes: 800 is the top mark on one section of the pre-1995 SAT, which had two sections of 200 to 800 each. This site’s SAT score to IQ conversion finds that even the 99.9th percentile predicts only about 137. This page rates him 135–150, which is about the 99th to the 99.96th percentile on the usual scale; our IQ percentile calculator shows the steps in between.
Is Steve Ballmer smarter than Bill Gates? The two lived down the hall from each other as Harvard sophomores, and Wikipedia says Ballmer outscored Gates on the Putnam, a claim with no cited result. This site rates Bill Gates at 150–160, a band that also rests on a National Merit Scholar award, and Ballmer at 135–150, level with Satya Nadella and Paul Allen. The two bands overlap at 150, and the gap is a judgment. For their school, see the average IQ of Harvard students.
How we read a number →Birth date and place, Detroit Country Day School valedictorian with an 800 on the SAT math section and a National Merit Scholar award, the 1977 Harvard degree, the Putnam statement, the Stanford MBA and the Microsoft dates. The article gives no IQ.
Says he “scored a 1600 on his SATs” and was a National Merit Scholar, “finished in the top 100” of the Putnam as a college sophomore and graduated magna cum laude in applied math and economics. It gives no year or rank for the Putnam and no score report.
Confirms the identifier Q181162 is the American businessman and former Microsoft chief executive, not a namesake.
Photograph by D. Begley, March 6, 2008 (MIX 08), licensed CC BY 2.0; the Flickr licence review passed.
Ranges used for comparison: Gates 150–160, Nadella 135–150, Allen 135–150. The SAT page gives about 137 for the 99.9th percentile, with about 12 points of error either side.
Wikipedia, the Harvard Crimson profile and a web search for a stated score found no IQ test result, Mensa listing or school IQ score for Steve Ballmer, and no SAT or Putnam score report.
The sources behind our estimate
The figures that circulate for Steve Ballmer, what we were able to confirm, and where the two diverge.
People search for “Steve Ballmer IQ” and “Steve Ballmer IQ score,” but we found no page that gives an IQ for him with a test, a date and a source. What circulates are his school results: an 800 on the SAT math section and a high Putnam finish.
The 800 appears in Wikipedia’s biography and a 1600 total in a 2002 Harvard Crimson profile; neither cites a score report. The Putnam finish is also reported secondhand. No IQ test result, Mensa listing or school IQ score has been published.
The ceiling this site’s SAT page gives for the 99.9th percentile (about 137) sits inside the 135–150 range, so the range leans high for a reported score. It is a band, not a reading.
Want a number that does hold up? Every figure on this page is somebody’s claim. Take the 30-question test and get a percentile you can check rather than a figure you have to trust.
Steve Ballmer — frequently asked
What is Steve Ballmer’s IQ?
Steve Ballmer has no published IQ score. Our estimate is 135–150 on the usual scale (mean 100, SD 15), read from a reported SAT math score of 800, a reported top-100 Putnam finish and a Harvard degree. It is an IQ Metrics estimate, not a test result.
Did Steve Ballmer score a perfect SAT math?
As reported, yes. Wikipedia gives an 800 on the math section, and a 2002 Harvard Crimson profile says he scored a 1600 on his SATs. Neither cites a score report, so treat both as reported, not documented.
Is Steve Ballmer smarter than Bill Gates?
No test settles it. Wikipedia says Ballmer scored higher than Gates on the Putnam, but no official result is cited for either. Our ranges are Gates 150–160 and Ballmer 135–150, overlapping at 150, and the gap is a judgment.
How well did Steve Ballmer do on the Putnam competition?
The Harvard Crimson says he finished in the top 100 as a college sophomore. The profile gives no year or rank, and no official result list is cited.
What did Steve Ballmer study at Harvard?
He took a Bachelor of Arts in applied mathematics and economics, magna cum laude, in 1977. He later started an MBA at Stanford and left in 1980 to join Microsoft.
Has Steve Ballmer taken an IQ test?
He may have, but no result is public. We found no school score, Mensa listing or test report for him, so this page says so instead of guessing a number.
What would an IQ of 135 to 150 mean?
On the usual scale a 135 is about the 99th percentile and a 150 about the 99.96th. Here it is a band read from reported school results, not a result from an IQ test.
How does my IQ compare with Steve Ballmer?
You can find out in about fifteen minutes. The IQ Metrics assessment is 30 questions, scored on the same 100-mean scale used throughout this page, so your result and the estimate above are at least expressed in the same units — one measured, one inferred. Once you have a number, the leaderboard shows where it would sit, and how we score and norm it explains the benchmarking.
Where does this estimate come from?
From the documented record rather than a test — the method is named above and set out in full under how we read a number. Compare it against the other business & tech profiles, starting with Steve Jobs.
- Take the 30-question IQ test — get a measured score and percentile of your own
- Average IQ by country — how the scale behaves across populations
- How IQ Metrics scores its assessment — the method behind our own number
- More on how IQ testing works — reliability, error and what a score can and cannot say
- More business & tech profiles — same field, same method
More business & tech
Portrait by Christopher Smith, U.S. Department of Health and Human Services — a work of the U.S. federal government, public domain. Background removed for the portrait above. · Photograph of Satya Nadella by Brian Smale and Microsoft (August 31, 2017), CC BY-SA 4.0. Cropped and with background removed for the portrait above. · Photograph of Paul Allen by Miles Harris (Flying Heritage Collection, Everett, Washington, April 2, 2013), CC BY-SA 3.0. Cropped for the portrait above.
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