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IQ FreeIQCheck

Educational tool

IQ Percentile Calculator

Enter an IQ score to see an estimated percentile and classification. Useful context for understanding average IQ and how scores compare on standardized scales.

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Educational estimate based on common population norms (mean 100, SD 15).

IQ score

100

Est. percentile

52th

Classification

Average

Within the most common IQ range on normed tests (mean 100).

This is an educational population estimate—not a clinical diagnosis. Take our free IQ test for illustrative practice results.

IQ score reference bands
IQ range Label Percentile context
55–69 Well below average Below 2nd percentile
70–84 Below average Roughly 2nd–16th percentile
85–99 Average Roughly 16th–50th percentile
100–114 Above average Roughly 50th–82nd percentile
115–129 High average Roughly 84th–97th percentile
130–144 Very high Roughly top 2–3%
145–160 Exceptionally high Top ~1% or less

How to use this calculator

Type any whole-number IQ between 55 and 160. The calculator maps your input to an illustrative percentile band based on common population norms (mean 100, standard deviation 15). This helps you interpret scores from practice quizzes, school reports, or curiosity—not replace professional assessment.

After exploring percentiles, try our free IQ test with instant results for a full 25-question reasoning session with explanations.

FAQ

IQ percentile FAQ

Calculator FAQ

What is an IQ percentile?
A percentile tells you what percentage of the population scored at or below a given IQ on standardized tests. IQ 100 is typically near the 50th percentile.
What is average IQ?
The population mean on most IQ scales is 100, with about 68% of people between 85 and 115. See our average IQ by age guide.
Is this IQ percentile calculator clinical?
No. This tool provides educational estimates using common norm references—not a psychological evaluation.
What is a good IQ score?
Context matters. Read what is a good IQ score and our IQ score chart for ranges.
How does this relate to the FreeIQCheck quiz?
Our free IQ test shows an illustrative score and percentile after 25 practice questions. Use this calculator to explore scores independently.

Want an illustrative score from practice?

Take our online IQ test—instant results, no email, 25 reasoning questions.

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