Free IQ Test & Brain Training

We'd rather show our work than dress up a number. Every score here comes from a formula we publish in full: you can read exactly how your raw answers become an IQ figure and a percentile, what the test actually measures, and — just as honestly — what an online estimate can't tell you. The scale is design-anchored rather than normed against a population study, so we call your result a consistent estimate of pattern-recognition ability, never a clinical diagnosis. And because every answer is scored right in your browser and never sent to a server, privacy here is a property of how the site is built, not a promise we ask you to trust.

Read the full methodology or learn more about the project.