About CalibratedIQ

CalibratedIQ is an independent project that offers six cognitive domain tests, each scored on the standard normal-distribution IQ scale (mean 100, standard deviation 15). Completing three or more tests produces a weighted composite IQ and a radar chart of your cognitive profile.

The project exists because most free online IQ tests either require an email to see your score, rely on trivia questions unrelated to established psychometrics, or both. Every test here runs entirely in your browser, stores results in local storage only, and reports scores using the same scale used in standardized clinical assessment.

Six tests cover distinct facets of general intelligence (g): pattern recognition (Raven-style progressive matrices), spatial reasoning, number sequences, logical reasoning, verbal reasoning, and working memory. Each test is 30 questions drawn from a seeded procedural generator, so the same seed always produces the same test.

Pattern recognition uses matrices modeled on John C. Raven's Progressive Matrices (1936), widely regarded as one of the purest measures of fluid intelligence (gf) because it relies on abstract geometric patterns rather than language or cultural knowledge.

Raw scores (number correct out of 30) are mapped onto a normal distribution with a mean of 100 and a standard deviation of 15, the scale used by the Wechsler Adult Intelligence Scale and most modern IQ instruments.

On this scale, roughly 68% of scores fall between 85 and 115, 95% fall between 70 and 130, and 99.7% fall between 55 and 145. The percentile rank indicates the proportion of the general population a given score would be expected to exceed.

The composite IQ is computed as a weighted average of the individual domain scores, with weights reflecting each domain's contribution to general intelligence as reported in the psychometric literature.

CalibratedIQ is a screening tool, not a clinical instrument. Scores should be read as approximations and are not appropriate for diagnostic, educational, or employment decisions.

Fatigue, distraction, test anxiety, familiarity with the item format, and environmental variables all affect performance. No online instrument can match the rigor of a proctored clinical assessment administered by a licensed psychologist.

For a full clinical evaluation of cognitive ability, seek a psychologist who can administer a standardized battery such as the WAIS-IV or Stanford-Binet under controlled conditions.