What Is An Average Iq For A 13 Year Old

Below are the average iq scores by age group, updated. This report is based on data from 508493 people worldwide who took the same iq test on this website in 2025 (mean: From childhood through young adulthood, the average iq score increases and peaks between ages 18 and 29, then gradually declines with age. The average iq is set at 100. This doesnt change depending on whether youre 7, 13, or 17 years old.

The average iq score for any age group is 100, while adults from 20 to 24 have a 99 average score. Use our interactive tool to find the average iq for any age. Iq tests are scaled by age. This can make it tricky to work out what your little ones score really means. For example, the table below shows the average score achieved by each age group. If you look closely, youll notice these are way below the worlds average iq of 100. So how can you tell whether or not your little one is going to be a genius?