CelebrityIQ.info compiles estimated IQ scores for well-known public figures using a range of publicly available sources. This page explains how we arrive at these estimates and their limitations.
IQ scores come from a combination of: reported scores in biographies and interviews, scores cited in academic or journalistic sources, expert estimates by psychologists who study high achievers, and proxies such as SAT scores, academic records, and professional achievements.
Most celebrities have never taken a standardized IQ test — or if they have, the results are private. The scores on this site are compiled estimates, not verified test results. We label each score as "Estimated," "Reported," or "Verified" accordingly.
Percentiles are calculated using a normal distribution with mean 100 and standard deviation 15 — the standard assumption for most modern IQ tests.