What Is a Good IQ Score?

A complete guide to IQ score ranges and what they mean for you.

IQ Score Classification

IQ RangeClassificationPop.
145+
Exceptionally gifted
0.1%
130–144
Gifted
2%
120–129
Superior
6.7%
110–119
Above average
16.1%
90–109
Average
50%
80–89
Below average
16.1%
70–79
Borderline
6.7%
Below 70
Extremely low
2%

Based on Stanford-Binet 5 and WAIS-IV classification (mean=100, SD=15).

What is the average IQ?

By definition, the average IQ score is 100. IQ tests are standardized so that the mean score equals 100 with a standard deviation of 15. This means roughly 68% of the population scores between 85 and 115.

What is considered a good IQ score?

An IQ score of 110 or above is generally considered above average. Scores of 120+ place you in the top ~10% of the population. A score of 130+ is typically classified as gifted (top 2%), which is the threshold for many high-IQ societies like Mensa.

Does IQ change over time?

IQ scores are relatively stable in adulthood but can be influenced by education, lifestyle, and cognitive training. Children's IQ scores may fluctuate more significantly as the brain continues to develop. The Flynn Effect shows average IQ scores have risen by about 3 points per decade over the 20th century due to better nutrition, education, and living conditions.

IQ vs. intelligence

IQ is a measure of specific cognitive abilities — logical reasoning, pattern recognition, mathematical thinking, and verbal comprehension. It is not a measure of creativity, emotional intelligence, wisdom, or practical skills. Many researchers argue that intelligence is multidimensional and cannot be fully captured by a single number.

Frequently Asked Questions

Is 120 a good IQ score?

Yes. An IQ of 120 puts you in the top 10% of the population and is classified as "Superior" on the Stanford-Binet scale.

What IQ score is needed for Mensa?

Mensa requires a score in the top 2% of the population, which corresponds to an IQ of 130 or above on most standardized tests.

What is the highest possible IQ?

There is no theoretical upper limit, but scores above 160 are extremely rare and difficult to measure accurately. Marilyn vos Savant is recorded with one of the highest at ~228 on a childhood test, though modern scoring would be lower.

How can I find out my IQ score?

You can take our free online IQ test — 35 questions based on Stanford-Binet methodology with instant results.

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