Is an IQ of 100 'Just Average'? What It Really Means and How to Find Your Strengths

Some people feel let down when an IQ test returns 'around 100 — am I just ordinary?' But statistically, an IQ of 100 is the most standard, most common result there is.

An IQ of 100 is the definitional average

Modern IQ is calibrated so each age group's average is 100 (see the basics of IQ's average and distribution). An IQ of 100 is simply the label for average intellectual ability — the exact middle, the top 50%.

About half the population scores 90–109

On the normal curve, roughly 50% of everyone falls between IQ 90 and 109. Most jobs, education, and services are designed around this band, so there is essentially no situation where an IQ of 100 holds you back. For cross-country comparisons, see average IQ by country.

Your domain profile beats your overall IQ

Two people can both have an overall IQ of 100 while one scores 115 in spatial reasoning and 90 in logic, and the other the reverse — they excel at completely different tasks. What pays off in real life is this profile of peaks and valleys, not the total. As covered in cognitive abilities and career fit, choosing an environment that matches your strong domains matters far more than a few points of overall IQ.

Measure your domain strengths

BrainRank's free IQ test scores four domains separately — spatial reasoning, pattern recognition, logical reasoning, and classification — and shows your personal strength/weakness profile. Rather than fixating on a single overall number, start by learning your own peaks and valleys.