Free IQ Score Percentile Calculator Online
Convert IQ score to population percentile, find IQ from percentile rank, and understand how Wechsler, Stanford-Binet, and Cattell scales differ. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Enter IQ Score
Input your IQ score (standard mean 100, SD 15 for most tests).
Select Scale
Choose Wechsler (SD=15), Stanford-Binet (SD=16), or Cattell (SD=24).
View Percentile
See exact population percentile and classification (Average, Superior, Very Superior, etc.).
Frequently Asked Questions
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