About Free IQ Test

Free IQ Test is a single-purpose site: one free free IQ test that works in the browser, with the method explained next to the result.

How we test the calculations

Before an update is published, the tool runs through 231 automated checks in a real browser: worked examples are recalculated, edge cases and wrong input are tried, and the layout is checked on desktop and on a phone.

What the explanations rely on

The formulas and reference values in the guides follow published standards and primary sources, linked where they are used.

Our approach

The editorial team writes for one reader: someone who needs a reliable answer now. That means worked examples, units spelled out, honest limits and no sponsored recommendations.

Keeping it current

Published October 9, 2026, last reviewed October 12, 2026. Corrections are welcome via the contact page; confirmed fixes go out with the next update.

How the site is paid for

The tool is free to use. The site is funded by advertising, which never influences results or explanations.

— Free IQ Test editorial team