IQ 100 Meaning: Percentile, Rarity and Real-Life Interpretation

IQ 100 is the statistical center of the scale. By definition, the average score on IQ tests in the general population is 100. You are exactly in the middle of the normal distribution. That's neither bad nor good — it's simply average.

Percentile and rarity

Approximately 1 in 2 people score 100 or higher.

Wechsler classification

Average (average) — a typical, average score.

IQ 100 and Mensa

No, an IQ of 100 does not reach the Mensa threshold (130). Mensa requires a score in the top 2% of the population, which corresponds to IQ 130+.

Online test vs official IQ test

take the test yourself.

What to do next

Related scores

IQ 90, IQ 110

Frequently asked questions

What percentile is this?

An IQ of 100 corresponds to the 50 percentile — meaning you score above 50% of the population.

Is this good or bad?

IQ 100 is classified as «average» on the Wechsler scale. This is a typical, average score.

Does this qualify for Mensa?

No, an IQ of 100 does not reach the Mensa threshold (130). Mensa requires a score in the top 2% of the population, which corresponds to IQ 130+.

Can I increase my IQ?

Cognitive training can improve working memory and processing speed, but the effect on overall IQ is modest (typically 1–3 points). More in how-to-train-iq.

How accurate are online IQ tests?

Online IQ tests provide an approximate estimate with a margin of error of about ±5–10 points. For official diagnosis, a WAIS-IV or Stanford-Binet test by a qualified psychologist is required.