Free IQ Test — See Your Score and the Mind That Matches It

Cognitive Self-Insight: Understand Your Problem-Solving Profile

This free 16-question cognitive skills assessment evaluates your spatial reasoning, logical deduction, verbal comprehension, and numerical pattern recognition. Designed for anyone curious about how their mind works, the test maps your raw cognitive index across four distinct domains to create a unique reasoning profile. Unlike a clinical IQ test, this quiz focuses on engaging self-insight and problem-solving styles rather than clinical diagnostics. In about five minutes, you will receive a free, instant snapshot of your cognitive index score on the familiar 85–145 scale. After viewing your free baseline score, you can optionally unlock a detailed reasoning analysis that compares your exact style of thinking to history’s greatest scientists, philosophers, and inventors.

What your cognitive index score actually means

When you complete this assessment, your performance is expressed on the familiar 85–145 scale. In modern psychometrics, intelligence scores follow a standard Gaussian normal distribution where the population average is set to 100 with a standard deviation of 15. A score is not an absolute measure of brain capacity, but a relative index indicating your statistical percentile ranking compared to the broader population.

These percentiles follow directly from the normal distribution curve and standard statistical conventions, not proprietary formulas.

The four reasoning domains we measure

Human intelligence is multidimensional. Our assessment evaluates four foundational cognitive pillars grounded in the Cattell–Horn–Carroll theory of human cognitive abilities:

• Numerical Reasoning: Evaluates mathematical pattern detection, progression extrapolation, and quantitative problem-solving speed without requiring advanced calculus.
• Verbal Reasoning: Measures semantic comprehension, relational concept analogies, and the deductive analysis of linguistic statements.
• Logical Deduction: Tests rule-based syllogisms, conditional constraint tracking, and systematic contradiction elimination.
• Pattern Recognition: Assesses visual-spatial matrix transformations, rotational symmetry, and nonverbal fluid intelligence (Gf).

Why we match you to a historical mind

Unlike conventional tests that reduce your intellect to a cold number, our optional Deep Report matches your domain balance to history's most creative thinkers. This is an engaging storytelling and self-reflection device based on documented problem-solving styles. Whether you share the visual mental simulation of Nikola Tesla, the empirical perseverance of Marie Curie, the cross-domain polymathy of Leonardo da Vinci, or the mathematical deduction of Isaac Newton, your cognitive profile highlights how your unique mind processes information. Explore our full library of historical figures' IQ profiles.

How this test is different from a clinical IQ test

We believe in absolute transparency: this assessment is not a clinical diagnostic instrument. A clinical IQ test (such as the WAIS-IV or Stanford-Binet 5) is administered one-on-one by a licensed clinical psychologist over 60 to 90 minutes. Clinical tests are required for diagnostic evaluations, educational placement, and legal documentation. In contrast, our test is a rapid, accessible 5-minute self-insight tool designed to provide an entertaining baseline reflection of your reasoning strengths. To learn more, read our guide on cognitive tests vs. IQ tests and review the major types of IQ tests.

Frequently asked questions