Free IQ Test

25 adaptive questions across 5 cognitive domains. IRT scoring. Calibrated against 50,000 real test-takers. Zero data collected.

• Questions get harder or easier based on your previous answer — this is how clinical adaptive tests work.
• Each question has one correct answer. There are no trick questions.
• Do not use external help — the test only gives you useful data if you answer independently.
• Take the test in one sitting, in a quiet environment with no distractions.
• All scoring runs in your browser. No data leaves your device.

No account required. No email. Results stay on your device. Privacy policy.