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The World's Leading Online IQ Test.

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Why Our IQ Test?

Our original IQ test is the most scientifically valid free IQ test available online today.

Previously offered only to corporations, schools, and in certified professional applications, the test is now available to you. In addition to offering your free general IQ, we offer an optional extensive analysis of your score, reporting your performance in 13 different areas of intelligence and revealing your key cognitive strengths and weaknesses.

Developed by PhDs and statistically sound, our free test reflects the best research available and can be taken on any desktop, laptop, tablet, or phone.

And, it’s fun!

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What Is an IQ?

Graph showing normalized IQ distribution with mean 100 and standard deviation 15

An Intelligence Quotient indicates a person’s mental abilities relative to others. Everyone has numerous specific mental abilities, some of which can be measured accurately and are reliable predictors of academic and financial success.

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Analyzing a Question

When you take the IQ test, the site will determine 13 individual IQ scores for different mental abilities. The process…