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William Stern

Alfred Binet

Binet-Simon Scale

David Wechsler

WAIS IQ Verbal

WAIS IQ Performance

WAIS IQ Summary

IQ Score Chart

IQ Score Visualized

The IQ score is divided by these intervals. There is no need to memorize all this information and intervals – your IQ score will be automatically defined and categorized at the end of the free IQ test provided.

IQ Score Chart

0-39 Severely challenged (0.13% of the population)
40-69 Challenged (2.14% of the population)
70–85 Below average (13.59 % of the population)
85–115 Average (68.26% of the population)
115–130 Above average (13.59 % of the population)
130–145 Gifted (2.14% of the population)
145+ Genius (Less than 0.13% of the population)


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