Average IQ by Country 2026 (Global Ranking)

Official International IQ Test website (online since 2018), reports.

Published by: International IQ Test

Last updated: January 1, 2026

Sample: 1,212,714 people who took the same IQ Test on this site in 2025 (mean IQ: 100; standard deviation: 15).

Year-to-year stability: In 84.8% of countries, the average score shifted by less than 2 points year over year.

How reliable is this ranking?

All scores in this ranking come from people who took the International IQ Test on this website between January 1, 2025 and December 31, 2025. The test is inspired by the Raven’s Progressive Matrices format, a nonverbal reasoning measure designed to be more culture-fair than language-heavy tests.

The test produced a mean of 100 and a standard deviation of 15 over three consecutive years in this report, and reported an internal g-saturation of 0.943 over two consecutive years in this report.

In the country ranking, 84.8% of countries stayed within 2 points of their prior-year average.

This IQ test has been taken by more than 16 million people and has been calibrated using standard psychometric methods.

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