IQ Percentile Calculator

Your details

Score mode converts an IQ to its percentile rank. Reverse mode finds the IQ for a target percentile.
Your IQ score from a standardized test (most use a mean of 100).
Most IQ tests use SD 15. The Cattell Culture Fair and some older tests use SD 16. Check your test documentation if unsure.
Percentile RankHigh Average
90.88%

Percentage of the population scoring below this IQ

Rarity1 in 11
Scored Higher9.12%
Z-Score1.33
90.88 IQ27.2% below · IQ Score

IQ 120 falls at the 90.88th percentile.

  • You scored higher than 90.88% of the population (1 in 11 people score at least this high).
  • Your IQ of 120 is 1.33 standard deviations above the population mean of 100.
  • IQ is measured with error: test-retest reliability puts typical measurement uncertainty at plus or minus 3-5 points. No single score is a perfect estimate.

Next stepPair this percentile with other measures of achievement, creativity, and emotional intelligence for a fuller picture of cognitive strengths.

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