IQ Percentile Calculator
Enter an IQ score to instantly see the percentile rank, bell curve position, classification label, and how rare that score is in the general population. All calculations use the Wechsler scale (mean = 100, SD = 15).
Enter Your IQ Score
Based on the Wechsler scale (mean = 100, standard deviation = 15)
IQ Classification Scale
| IQ Range | Classification |
|---|---|
| Below 70 | Extremely Low |
| 70–79 | Borderline |
| 80–89 | Low Average |
| 90–109 | Average |
| 110–119 | High Average |
| 120–129 | Superior |
| 130–144 | Very Superior |
| 145+ | Genius / Near-Genius |
What Does IQ Percentile Mean?
An IQ percentile tells you what percentage of the population scores at or below a given IQ score. For example, if your IQ is at the 84th percentile, it means you scored higher than 84% of people. Percentiles are derived from the normal (bell curve) distribution of IQ scores.
How Is IQ Percentile Calculated?
IQ scores follow a normal distribution with a mean of 100 and a standard deviation of 15 (Wechsler scale). The percentile is computed using the cumulative distribution function (CDF), which gives the area under the bell curve to the left of a given score. This calculator performs this computation instantly in your browser. No data is sent to any server.
Common IQ Percentile Benchmarks
Here are some frequently referenced IQ scores and their corresponding percentiles:
- IQ 85: 16th percentile (1 standard deviation below mean)
- IQ 100: 50th percentile (population average)
- IQ 115: 84th percentile (1 standard deviation above mean)
- IQ 130: 98th percentile (gifted threshold)
- IQ 145: 99.87th percentile (genius level)
For a complete reference, see our full IQ percentile table. Want to know which careers match your percentile? Our IQ by Profession tool shows average IQ ranges for 170+ occupations.
Frequently Asked Questions
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