Stanford‑Binet IQ Assessment
A comprehensive measure of cognitive ability. This adaptive assessment maps your reasoning across five domains, spatial, memory, knowledge, quantitative, and fluid intelligence, through levels that adjust to every answer you give.

How to get an accurate result
A few things worth knowing before the first question.
- 01
Set aside about 45 minutes
Find a quiet space where you can work through every level without interruptions, in one sitting.
- 02
Answer at your own pace
There is no penalty for thinking. The test calibrates to your responses, so a considered answer serves you better than a fast one.
- 03
Let the difficulty move
A short calibration round places your starting level, then each answer nudges the next question up or down to find your edge.
You're all set. The test adapts as you go, so just answer honestly and let it find your level.
Your responses are private and secure