IQ Score Estimator

Convert a raw IQ score to a percentile and classification using standard deviation scales.

RangeClassificationPercentile
130+Very Superior98+
120–129Superior91–97
110–119High Average75–90
90–109Average25–74
80–89Low Average9–24
70–79Borderline2–8
Below 70Extremely LowBelow 2

IQ Score Estimator

Converts an IQ score to a population percentile and classification. IQ tests are standardized so that the average score is 100 and one standard deviation is 15 points (Wechsler scale).

  • An IQ of 100 is exactly average — 50% of people score higher, 50% lower
  • Only a certified psychologist administering a standardized test provides a true IQ score
  • Online IQ tests are not equivalent to clinical assessments
  • IQ measures specific cognitive abilities, not general intelligence or potential