IQ score chart
Every score below is placed on the same curve: mean 100, standard deviation 15, the scale used by modern IQ tests. Percentiles and rarities are computed from the normal distribution.
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Jump to a band: Very Superior · Superior · High Average · Average · Low Average · Borderline · Extremely Low
Very Superior (130 and above)
| IQ | Percentile | Rarity |
|---|---|---|
| IQ 160 | 99.997 | 1 in 32,000 higher |
| IQ 159 | 99.996 | 1 in 24,000 higher |
| IQ 158 | 99.994 | 1 in 18,000 higher |
| IQ 157 | 99.993 | 1 in 14,000 higher |
| IQ 156 | 99.991 | 1 in 11,000 higher |
| IQ 155 | 99.99 | 1 in 8,100 higher |
| IQ 154 | 99.98 | 1 in 6,300 higher |
| IQ 153 | 99.98 | 1 in 4,900 higher |
| IQ 152 | 99.97 | 1 in 3,800 higher |
| IQ 151 | 99.97 | 1 in 3,000 higher |
| IQ 150 | 99.96 | 1 in 2,300 higher |
| IQ 149 | 99.95 | 1 in 1,800 higher |
| IQ 148 | 99.93 | 1 in 1,500 higher |
| IQ 147 | 99.91 | 1 in 1,200 higher |
| IQ 146 | 99.89 | 1 in 920 higher |
| IQ 145 | 99.87 | 1 in 740 higher |
| IQ 144 | 99.83 | 1 in 600 higher |
| IQ 143 | 99.79 | 1 in 480 higher |
| IQ 142 | 99.74 | 1 in 390 higher |
| IQ 141 | 99.69 | 1 in 320 higher |
| IQ 140 | 99.62 | 1 in 260 higher |
| IQ 139 | 99.53 | 1 in 210 higher |
| IQ 138 | 99.44 | 1 in 180 higher |
| IQ 137 | 99.32 | 1 in 150 higher |
| IQ 136 | 99.18 | 1 in 120 higher |
| IQ 135 | 99.02 | 1 in 100 higher |
| IQ 134 | 98.8 | 1 in 85 higher |
| IQ 133 | 98.6 | 1 in 72 higher |
| IQ 132 | 98.4 | 1 in 61 higher |
| IQ 131 | 98.1 | 1 in 52 higher |
| IQ 130 | 97.7 | 1 in 44 higher |
Superior (120 to 129)
| IQ | Percentile | Rarity |
|---|---|---|
| IQ 129 | 97.3 | 1 in 38 higher |
| IQ 128 | 96.9 | 1 in 32 higher |
| IQ 127 | 96.4 | 1 in 28 higher |
| IQ 126 | 95.8 | 1 in 24 higher |
| IQ 125 | 95.2 | 1 in 21 higher |
| IQ 124 | 94.5 | 1 in 18 higher |
| IQ 123 | 93.7 | 1 in 16 higher |
| IQ 122 | 92.9 | 1 in 14 higher |
| IQ 121 | 91.9 | 1 in 12 higher |
| IQ 120 | 90.9 | 1 in 11 higher |
High Average (110 to 119)
| IQ | Percentile | Rarity |
|---|---|---|
| IQ 119 | 89.7 | 1 in 10 higher |
| IQ 118 | 88.5 | 1 in 9 higher |
| IQ 117 | 87.1 | 1 in 8 higher |
| IQ 116 | 85.7 | 1 in 7 higher |
| IQ 115 | 84.1 | 1 in 6 higher |
| IQ 114 | 82.5 | 1 in 6 higher |
| IQ 113 | 80.7 | 1 in 5 higher |
| IQ 112 | 78.8 | 1 in 5 higher |
| IQ 111 | 76.8 | 1 in 4 higher |
| IQ 110 | 74.8 | 1 in 4 higher |
Average (90 to 109)
| IQ | Percentile | Rarity |
|---|---|---|
| IQ 109 | 72.6 | 1 in 4 higher |
| IQ 108 | 70.3 | 1 in 3 higher |
| IQ 107 | 68 | 1 in 3 higher |
| IQ 106 | 65.5 | 1 in 3 higher |
| IQ 105 | 63.1 | 1 in 3 higher |
| IQ 104 | 60.5 | 1 in 3 higher |
| IQ 103 | 57.9 | 1 in 2 higher |
| IQ 102 | 55.3 | 1 in 2 higher |
| IQ 101 | 52.7 | 1 in 2 higher |
| IQ 100 | 50 | 1 in 2 |
| IQ 99 | 47.3 | 1 in 2 lower |
| IQ 98 | 44.7 | 1 in 2 lower |
| IQ 97 | 42.1 | 1 in 2 lower |
| IQ 96 | 39.5 | 1 in 3 lower |
| IQ 95 | 36.9 | 1 in 3 lower |
| IQ 94 | 34.5 | 1 in 3 lower |
| IQ 93 | 32 | 1 in 3 lower |
| IQ 92 | 29.7 | 1 in 3 lower |
| IQ 91 | 27.4 | 1 in 4 lower |
| IQ 90 | 25.2 | 1 in 4 lower |
Low Average (80 to 89)
| IQ | Percentile | Rarity |
|---|---|---|
| IQ 89 | 23.2 | 1 in 4 lower |
| IQ 88 | 21.2 | 1 in 5 lower |
| IQ 87 | 19.3 | 1 in 5 lower |
| IQ 86 | 17.5 | 1 in 6 lower |
| IQ 85 | 15.9 | 1 in 6 lower |
| IQ 84 | 14.3 | 1 in 7 lower |
| IQ 83 | 12.9 | 1 in 8 lower |
| IQ 82 | 11.5 | 1 in 9 lower |
| IQ 81 | 10.3 | 1 in 10 lower |
| IQ 80 | 9.1 | 1 in 11 lower |
Borderline (70 to 79)
| IQ | Percentile | Rarity |
|---|---|---|
| IQ 79 | 8.1 | 1 in 12 lower |
| IQ 78 | 7.1 | 1 in 14 lower |
| IQ 77 | 6.3 | 1 in 16 lower |
| IQ 76 | 5.5 | 1 in 18 lower |
| IQ 75 | 4.8 | 1 in 21 lower |
| IQ 74 | 4.2 | 1 in 24 lower |
| IQ 73 | 3.6 | 1 in 28 lower |
| IQ 72 | 3.1 | 1 in 32 lower |
| IQ 71 | 2.7 | 1 in 38 lower |
| IQ 70 | 2.3 | 1 in 44 lower |
Extremely Low (69 and below)
| IQ | Percentile | Rarity |
|---|---|---|
| IQ 69 | 1.9 | 1 in 52 lower |
| IQ 68 | 1.6 | 1 in 61 lower |
| IQ 67 | 1.4 | 1 in 72 lower |
| IQ 66 | 1.2 | 1 in 85 lower |
| IQ 65 | 0.98 | 1 in 100 lower |
| IQ 64 | 0.82 | 1 in 120 lower |
| IQ 63 | 0.68 | 1 in 150 lower |
| IQ 62 | 0.56 | 1 in 180 lower |
| IQ 61 | 0.47 | 1 in 210 lower |
| IQ 60 | 0.38 | 1 in 260 lower |
| IQ 59 | 0.31 | 1 in 320 lower |
| IQ 58 | 0.26 | 1 in 390 lower |
| IQ 57 | 0.21 | 1 in 480 lower |
| IQ 56 | 0.17 | 1 in 600 lower |
| IQ 55 | 0.13 | 1 in 740 lower |
Rarity reads as “about 1 in N people score this high or higher” above 100, and “this low or lower” below 100. The chart runs from 55 to 160; for any other number use the IQ percentile calculator, or look a percentile up on the IQ by percentile page.
The classification bands
The WAIS-IV groups scores into seven labeled bands (Wikipedia: IQ classification). The share of people in each band below comes from the normal curve. The guide to IQ classification walks through each one.
| Band | Scores | Share of people |
|---|---|---|
| Very Superior | 130+ | 2.5% |
| Superior | 120 to 129 | 7.2% |
| High Average | 110 to 119 | 16.6% |
| Average | 90 to 109 | 49.5% |
| Low Average | 80 to 89 | 15.6% |
| Borderline | 70 to 79 | 6.5% |
| Extremely Low | 69 and below | 2.1% |
How to read this chart
About 68% of people score between 85 and 115, about 95% between 70 and 130, and about 99.7% between 55 and 145 (the 68-95-99.7 rule). A percentile is the share of people expected to score below a given number, so an IQ at the 90th percentile is higher than about 90% of people the same age.
These numbers assume a standard deviation of 15. Some tests use 16 or 24, which prints the same percentile as a different number (Wikipedia: IQ classification). The percentile to IQ converter handles all three.
Free tools: IQ percentile calculator · Percentile to IQ converter · IQ score chart
Related
- No. 01IQ percentile calculatorAny IQ score to percentile, rarity and classification.
- No. 02IQ percentilesThe IQ at the top 1%, 2%, 5%, 10% and more, on three scales.
- No. 03IQ classificationSeven labels, their ranges, and how many people fall in each.
- No. 04Average IQ100 by design. What the average range covers and why.
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