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IQ Score Percentile

Convert any IQ score to its population percentile rank and descriptive band.

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Percentile
Band
1 in every...

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What Does IQ Mean?

IQ tests measure cognitive ability relative to the population. IQ 100 = average. Scores follow a normal distribution (bell curve) with SD of 15.

IQ Bands

Frequently Asked Questions

What is a genius IQ?+
Conventionally, IQ above 140 is considered 'genius'. Mensa requires 130+ (top 2%). IQ 115+ is top 16% of population.
Can IQ change over time?+
IQ scores can vary with age, education, health and test conditions. IQ is not a fixed, immutable measure.

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