IQ Distribution Data
The theoretical distribution of IQ (mean 100, standard deviation 15). See the percentage in each IQ band and what "1 in how many people" it represents, backed by data.
Normal distribution (mean 100, standard deviation 15)
Percentage in each IQ band
55〜70
2.14%
70〜85
13.59%
85〜100
34.13%
100〜115
34.13%
115〜130
13.59%
130〜145
2.14%
145〜160
0.13%
- 55〜70（Borderline）About 1 in 47 people
- 70〜85（Below average）About 1 in 7 people
- 85〜100（Average (lower half)）About 1 in 3 people
- 100〜115（Average (upper half)）About 1 in 3 people
- 115〜130（High）About 1 in 7 people
- 130〜145（Very high）About 1 in 47 people
- 145〜160（Genius level）About 1 in 759 people
This data is based on statistics from IQ test takers
Measure yours too →* Figures are estimates and illustrative values based on a normal distribution model and general findings. They are not aggregated from actual test-taker data.