Find the shape of your mind.

What is the Core Brain IQ test?

Core Brain is a free online IQ test calibrated against a normed distribution. It measures fluid reasoning across six cognitive axes and returns a composite IQ score, percentile, balance score, g-factor, and per-axis breakdown. The full detailed result, narrative, and downloadable IQ certificate unlock for a one-time $2 fee — no subscription, no upsell.

How it works

• Pick from five difficulty levels — Warm-up, Standard, Challenging, Hard, or Genius.
• Answer 40 calibrated questions in 20 minutes.
• Get a normed IQ score, percentile, six-axis cognitive profile, and a downloadable certificate.
• Entertainment and self-reflection only — not a clinical or medical assessment.

Frequently asked

How long does the IQ test take?

About twenty minutes total, with a single global timer rather than per-question pressure.

Is Core Brain free?

Taking the test is free. Unlocking the detailed score, percentile, and certificate is a one-time $2 fee.

What does an IQ of 130 mean?

Roughly two standard deviations above the mean of 100 — top 2 percent of the population, classified as Highly Gifted.