IQ 175 — How Rare It Is, What It Means & Famous People With This Score
An IQ of 175 is higher than 99.999971% of people. About 1 in 3.5 million people score 175 or above — about 2,400 people alive today. It sits 5.00 standard deviations above the average and is classed as exceptionally gifted.
| Percentile | 99.999971th |
|---|---|
| How rare | 1 in 3.5 million |
| People alive with this score or higher | about 2,400 of 8.2 billion |
| Standard deviations above the average of 100 | +5.00 |
| Classification | exceptionally gifted |
| Mensa (top 2%, 130 and above) | qualifies |
Is 175 a good IQ?
Yes. An IQ of 175 is higher than 99.999971% of people. It clears the Mensa line: Mensa admits the top 2%, which is 130 or above on tests with a standard deviation of 15.
How many people have an IQ of 175 or higher?
About 2,400 of the world’s 8.2 billion people, on the normal curve (average 100, standard deviation 15) used by modern tests.
Standard versions of the leading adult tests, the WAIS-IV and the Stanford–Binet 5, top out at 160. Scores above that come from old ratio formulas used on children, from extended norms or from extrapolation, so treat them as estimates, not measurements.
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Take the IQ test →What Does an IQ of 175 Mean?
An IQ of 175 places an individual far above the genius threshold of 140, in the realm classified as "Exceptionally Gifted." This score is achieved by approximately 1 in 3.5 million of the global population — making it exceptionally uncommon.
At this cognitive level, individuals typically demonstrate remarkable ability in abstract reasoning, pattern recognition, and creative problem-solving. Many of history's most influential scientists, mathematicians, artists, and philosophers are estimated to have had IQ scores in this range.
Where IQ 175 Falls on the Bell Curve
The highlighted area shows the percentage of the population scoring at or above IQ 175. The dashed line marks the exact position of this score on the normal distribution.
No geniuses in our database have an estimated IQ of exactly 175.
Explore geniuses with nearby IQ scores below, or browse all IQ rankings.
Explore Other IQ Scores
About IQ Scores: IQ (Intelligence Quotient) scores follow a normal distribution with a mean of 100 and a standard deviation of 15. Historical IQ estimates for famous individuals are approximations based on their demonstrated achievements, not direct test results. These estimates should be considered illustrative rather than definitive.
