Analysing your IQ
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Discover how rare your IQ score is. See your "1 in X" rarity, the estimated number of people worldwide who share your intelligence level, and vivid comparisons to put it in perspective.
IQ scores follow a normal (bell curve) distribution with a mean of 100 and a standard deviation of 15. This means that about 68% of the population scores between 85 and 115, and approximately 95% scores between 70 and 130.
The further your score is from the mean of 100, the rarer it becomes. Scores above 130 (often called "gifted") represent only about 2.2% of the population. Scores above 145 are found in roughly 0.13% of people, or about 1 in 741.
It is worth noting that these statistics assume a perfectly normal distribution. In practice, IQ distributions at the extreme tails may deviate slightly from the theoretical normal curve due to ceiling effects in tests and sampling limitations.
The "1 in X" rarity means that out of X randomly selected people, on average only 1 would have your IQ score or higher. For example, an IQ of 130 is roughly 1 in 44, meaning only 1 person in every 44 scores that high.
An IQ of 140 places you in approximately the top 0.38% of the population. Out of 8 billion people worldwide, roughly 30 million people would statistically have an IQ of 140 or above. However, this is a theoretical estimate since not everyone has been tested.
An IQ of 120 is in the "Superior" range, placing you above approximately 91% of the population. About 1 in 11 people have an IQ of 120 or higher, so while above average, it is not extremely rare.
