IQ 193
An IQ of 193 is higher than almost everyone: about 1 in 3.5 billion.
Is your IQ above 193?
25 questions · about 12 minutes
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- 99.999th
- Percentile, at least
- 1 in 3.5 billion
- Score 193 or higher
- Profoundly Gifted
- Classification
On the standard scale that is 6.20 standard deviations above average. No test has been checked against enough people to confirm a score this high.
An IQ of 193 falls in the profoundly gifted IQ range, which starts at 160. Find 193 on the IQ chart, or check how rare any score is with the IQ rarity calculator.
IQ 193: beyond what most tests can measure
193 is 6.20 standard deviations above the mean. On a bell curve that works out to about 1 in 3.5 billion people, which would mean fewer than one (0.02 expected) in the UK and about 2 worldwide. The bell curve is a model, though, and at this height it is doing most of the work.
Major individually administered adult tests typically report full-scale scores up to about 160. A reported number above that usually comes from extended norms, a different scale or extrapolation.
No test has enough people in its norm sample to check its accuracy at 193. In a 2,200-person sample the bell curve expects effectively nobody at 193 or higher.
How claims like "193 IQ" arise
If someone tells you they have a 193, the first question is where the number came from. The usual answers:
- Ratio IQ. Early childhood tests divided mental age by real age. A 6-year-old solving puzzles like a typical 11.6-year-old got a ratio IQ of 193. Modern deviation IQs do not work this way.
- Different scales. Some tests use a standard deviation of 24, so a 193 there is about 158 on the usual SD 15 scale.
- Historiometric estimates. Researchers such as Catharine Cox (1926) estimated IQs for famous people from biographies. Some of her adjusted estimates went above 200. They are educated guesses, not test results.
Famous estimates: Newton, da Vinci and the 160+ club
Nobody in history has a measured IQ of 193. The highest estimates on this site, for figures such as Isaac Newton and Leonardo da Vinci, come from reading their work and lives, not from tests. 42 profiles here are estimated at 160 or more.
Estimates this high mostly reflect how extraordinary the achievement was. That is a different thing from how someone would perform on a timed reasoning test.
How many people have an IQ of 193 or higher?
Scoring 193 or higher is a 0.000000028% share of everyone. Scaled up to whole populations, that works out as:
| Where | Population | IQ 193+ |
|---|---|---|
| UK | 68 million | fewer than one (0.02 expected) |
| US | 335 million | fewer than one (0.09 expected) |
| World | 8.1 billion | 2 |
You would need the whole world to expect about 2 people at 193 or higher.
About 1 in 8.3 billion people would score exactly 193, meaning between 192.5 and 193.5 on a continuous scale. In the UK that is fewer than one person.
Treat these as orders of magnitude, not census data. They apply the standard model to everyone, and individual tests have their own norms.
How rare is an IQ of 193?
An IQ of 193 or higher is 7.9 times rarer than 188 or higher, and 198 or higher is 8.8 times rarer again. At this point on the curve, each extra point makes a score about 53% rarer.
What your 193 could really be. Even a good supervised test has a margin of error of roughly 5 points either side, and far more at this height. A true score from 188 to 198 would span rarities from 1 in 450 million to 1 in 31 billion.
Which scale was it on? A 193 reported on an SD 16 scale converts to about 187 on the usual SD 15 scale, and one from an SD 24 scale (seen in some Cattell-style results) to about 158. Check which scale your score report used.
Famous people with an estimated IQ near 193
Nobody famous has a verified IQ in most cases, and retrospective estimates are only made for a narrow group.
No historical figure on this site has an estimate close to 193. Retrospective estimates cluster between about 115 and 250 because they are only made for people with exceptional achievements. That is a selection effect, not a sign that famous or successful people cannot score 193.
See all historical IQ estimates or all fictional character IQs.
193 compared with nearby scores
Nearby scores and the round-number landmarks, so you can see how quickly the percentile changes around 193. Every row links to that score's page.
| IQ | Classification | Percentile | Score higher |
|---|---|---|---|
| IQ 100 | Average | 50th | 50% |
| IQ 110 | High Average | 74.8th | 25% |
| IQ 120 | Superior | 90.9th | 9.1% |
| IQ 130 | Gifted | 97.7th | 2.3% |
| IQ 140 | Gifted | 99.62nd | 0.38% |
| IQ 150 | Genius | 99.96th | 0.043% |
| IQ 188 | Profoundly Gifted | >99.999th | 0.00000022% |
| IQ 192 | Profoundly Gifted | >99.999th | 0.000000043% |
| IQ 193 | Profoundly Gifted | >99.999th | 0.000000028% |
| IQ 194 | Profoundly Gifted | >99.999th | 0.000000019% |
| IQ 198 | Profoundly Gifted | >99.999th | 0.0000000032% |
Questions about an IQ of 193
Is 193 a good IQ?
What percentile is an IQ of 193?
Is 193 genius level?
What does an IQ of 193 mean?
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Is your IQ above 193?
See where you land next to 193 with 25 visual reasoning questions.
25 questions · about 12 minutes
Percentiles and counts use a normal distribution with mean 100 and standard deviation 15. Real tests have their own norms, confidence intervals and ceilings, so treat every figure here as an approximation, not a diagnosis. Two tests often give different numbers for the same person: here is why.
By the LifeScore Editorial Team. Reviewed October 2026. Editorial policy