IQ Percentile Calculator
Convert standard IQ scores into population percentiles based on the normal distribution (Mean 100, SD 15).
To find your intelligence percentile:
Step 1: Enter your standard IQ score.
Step 2: The tool calculates where you fall on the population bell curve.
Step 3: See your percentile and the estimated population with a similar score.
IQ scores are normalized with a mean (μ) of 100 and a standard deviation (σ) of 15. Your percentile is the cumulative probability of scoring less than your IQ value using the normal distribution function.
An IQ score of 100 is designed to be the average. Because IQ follows a normal distribution, most people (about 68%) score between 85 and 115. Percentiles provide a clearer picture of how 'rare' an IQ score is compared to the rest of the world.
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