Calculators & Tools
A collection of free psychometric calculators and compositing tools, covering composite IQ estimates, g-loading and reliability utilities, percentile/probability conversions, and population-based models.
All Calculators and Tools
g-Estimator
Use scores from multiple IQ tests to instantly compute a composite IQ, estimated g-loading, reliability, and 95% confidence intervals.
Compositator
Enter index scores to instantly compute FSIQ, GAI, and CPI- along with their g-loadings, reliabilities, and 95% confidence intervals.
Mega Compositator
Enter IQ scores with g-loadings to get an optimized composite IQ, its g-loading, and a rough SLODR estimate.
Percentile Calculator
Enter a mean and SD plus either a score or probability to instantly convert between the other and calculate rarity.
World IQ Map
Explore cognitive-ability estimates across the globe, created by merging GWAS and other genotypic IQ data with national IQ scores.
Gender Distribution
Visualizes male and female IQ distributions and plots the populational distribution at, above, or below any chosen score.
Parent-Child IQ Calculator
Predicts likely son and daughter IQ ranges from given parents' IQs at any specified rarity odds.
Population Estimator
Estimates a population's average IQ by modeling how cranial capacity, malnutrition, and consanguinity affect cognitive ability.
SAT to IQ Calculator
Convert SAT section scores (Verbal or Math, 200–800) or composite scores (400–1600) to estimated IQ equivalents.
SC-Ultra
A free guide that combines several tests to give a comprehensive IQ estimate across every factor of general intelligence.