IQ percentile chart
What percentage of people score below each IQ score, from 70 to 145. IQ tests are scaled so the average is 100 and the standard deviation is 15.
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IQ score ranges
| IQ | Classification | Share of people |
|---|---|---|
| 130+ | Extremely high | about 2.5% |
| 120–129 | Very high | about 7% |
| 110–119 | High average | about 17% |
| 90–109 | Average | about 50% |
| 80–89 | Low average | about 16% |
| 70–79 | Very low | about 7% |
Percentile by score
| IQ | Percentile | 1 in … | Range |
|---|---|---|---|
| 70 | 2.1% | – | Very low |
| 75 | 4.5% | – | Very low |
| 80 | 8.6% | – | Low average |
| 85 | 15% | – | Low average |
| 90 | 24% | – | Average |
| 95 | 36% | 1 in 2 | Average |
| 100 | 49% | 1 in 2 | Average |
| 105 | 62% | 1 in 3 | Average |
| 110 | 74% | 1 in 4 | High average |
| 115 | 83% | 1 in 6 | High average |
| 120 | 90% | 1 in 10 | Very high |
| 125 | 95% | 1 in 20 | Very high |
| 130 | 98% | 1 in 41 | Extremely high |
| 135 | 99% | 1 in 93 | Extremely high |
| 140 | 99.6% | 1 in 237 | Extremely high |
| 145 | 99.8% | 1 in 664 | Extremely high |
"1 in …" is how many people you'd need to find one who scores at that level or higher.
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