IQ 70: meaning, percentile and rarity
An IQ of 70 sits in the below average range on the standard scale (mean 100, standard deviation 15). 2.28% of the reference population scores below this level, and 97.72% scores above it.
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- 2.28% of people score below IQ 70, and 97.72% score above it.
- Rarity
- About 1 in 44 people score IQ 70 or lower.
- Distance from the mean
- 30 points below the mean of 100 — about 2 standard deviations.
2.28% of people score below IQ 70, and 97.72% score above it.
What range does IQ 70 fall into?
An IQ of 70 sits in the below average range.
This range sits just below the statistical average. It is common — roughly one in four to one in five people score in this band — and on its own it says little about someone's overall ability or potential.
How rare is IQ 70?
About 1 in 44 people score IQ 70 or lower.
Frequently asked questions
- Is an IQ of 70 a good score?
- An IQ of 70 sits in the below average range, with about 2.28% of a normal population scoring below it. Whether that counts as good depends on what the score is used for — and no single online result should be treated as a definitive measure of ability.
- How rare is an IQ of 70?
- In a normal distribution, about 1 in 44 people score IQ 70 or lower.
- What percentile is an IQ of 70?
- 2.28% of the reference population scores below IQ 70. That is its percentile rank — a position on a scale from 0 to 100, not the share of questions answered correctly.
This page describes the theoretical normal distribution (mean 100, standard deviation 15) for educational purposes. It is not a clinical assessment or a diagnosis.