IQ Percentile Chart: Find Your Exact Ranking
Your IQ percentile tells you what percentage of the population you score higher than. An IQ of 100 is the 50th percentile (higher than half), while an IQ of 130 is the 98th percentile (higher than 98%). Use the chart below to find your exact ranking.
Complete IQ Percentile Table
| IQ Score | Percentile | Higher Than | Rarity |
|---|---|---|---|
| 160 | 99.997th | 99.997% of people | 1 in 31,000 |
| 155 | 99.99th | 99.99% of people | 1 in 10,000 |
| 150 | 99.96th | 99.96% of people | 1 in 2,330 |
| 145 | 99.9th | 99.9% of people | 1 in 741 |
| 140 | 99.6th | 99.6% of people | 1 in 261 |
| 135 | 99th | 99% of people | 1 in 100 |
| 130 | 98th | 98% of people | 1 in 50 |
| 125 | 95th | 95% of people | 1 in 20 |
| 120 | 91st | 91% of people | 1 in 11 |
| 115 | 84th | 84% of people | 1 in 6 |
| 110 | 75th | 75% of people | 1 in 4 |
| 105 | 63rd | 63% of people | Common |
| 100 | 50th | 50% of people | Most common |
| 95 | 37th | 37% of people | Common |
| 90 | 25th | 25% of people | 1 in 4 |
| 85 | 16th | 16% of people | 1 in 6 |
| 80 | 9th | 9% of people | 1 in 11 |
| 75 | 5th | 5% of people | 1 in 20 |
| 70 | 2nd | 2% of people | 1 in 50 |
How IQ Percentiles Work
IQ scores follow a normal distribution (bell curve) with a mean of 100 and standard deviation of 15. This mathematical relationship allows precise conversion between IQ scores and percentiles:
- Each 15-point increase above 100 moves you roughly one standard deviation higher
- 68% of people score between 85 and 115 (within 1 SD)
- 95% of people score between 70 and 130 (within 2 SD)
- 99.7% of people score between 55 and 145 (within 3 SD)
Percentiles for Common IQ Questions
What percentile is IQ 120?
91st percentile — you score higher than ~91% of people. About 1 in 11 people score this high. This is classified as superior.
What percentile is IQ 130?
98th percentile — top 2% of the population. This is the Mensa qualification threshold and the beginning of the gifted range.
What percentile is IQ 140?
99.6th percentile — top 0.4%, or about 1 in 261 people. This is the commonly cited genius threshold.
What percentile is IQ 100?
50th percentile — exactly average. You score higher than half the population and lower than the other half. See our page on what makes a good IQ score.
Frequently Asked Questions
What IQ percentile am I in?
Find your score in the table above. Or as a rule of thumb: IQ 100 = 50th percentile, with each 5 points adding roughly 10-15 percentile points in the middle range.
What does 99th percentile IQ mean?
It means you score higher than 99% of people — only 1 in 100 score as high or higher. This corresponds to an IQ of approximately 135.
What percentile is an IQ of 120?
120 IQ is at the 91st percentile — higher than about 91% of the population.
Take our free IQ test to find your percentile ranking. Learn more about how IQ is measured, score ranges, and how IQ varies by country.