What IQ is considered genius?
Updated 31 October 2026
There’s no official “genius” IQ. Modern tests don’t use the word. Scores of 140 and above are very rare, but they can’t tell you who will do something brilliant.
Where the idea comes from
In 1916 the American psychologist Lewis Terman described scores above 140 as “near genius or genius”. The label stuck in popular culture, but modern tests replaced it with neutral ranges.
How rare are very high scores?
| IQ score | People with this score or more |
|---|---|
| 140 | about 1 in 260 |
| 145 | about 1 in 740 |
| 150 | about 1 in 2,300 |
| 155 | about 1 in 8,100 |
| 160 | about 1 in 32,000 |
| 170 | about 1 in 650,000 |
Why very high scores are less precise
- Few people score that high, so tests have little data to compare them with.
- Many tests can’t measure past a certain level: they run out of hard enough questions.
- Above about 145, scores are often estimates stretched from the rest of the scale. On UNIQUE too.
Famous IQs are usually guesses
Einstein never took an IQ test, so any number you see for him is a guess. Many record-breaking scores come from old childhood tests that worked differently from today’s and could give much higher numbers.
Quick answers
- Is 140 a genius IQ? It’s about 1 in 260 people, but “genius” isn’t a scientific range.
- What’s the highest possible IQ? There’s no fixed maximum, but most clinical tests top out around 160.
- Does a high IQ guarantee success? No. Effort, interests, opportunities and luck matter a lot. See what is a good IQ score?
Find out your score
UNIQUE is a non-verbal IQ test: 64 matrices that adapt to your level. Taking it is free; you pay only to see your result.