Your IQ, free in 15 minutes.
A real, research-backed IQ test — no registration, no payment, no SMS. Answer 33 questions in a clean, distraction-free screen and get your score, percentile and full cognitive profile the instant you finish.
Every IQ is a position on one curve.
Scores follow a normal distribution centred at 100. Half of everyone sits between 90 and 110; only ~2% clear 130. Your result is a point on this curve — and a profile underneath it.
Very Superior
Top 2%. Exceptional abstract reasoning and complex problem-solving.
Average range
Where about 68% of people land. Solid, typical cognitive functioning.
Re-test territory
Often a sign of distraction or fatigue rather than ability — try again rested.
Four kinds of reasoning, one g-factor.
Each domain captures a distinct facet of general intelligence. Matrix-style abstract reasoning carries the most weight — it's the single best marker of fluid intelligence.
Spatial 20 items
Visual matrices and pattern completion — spotting the rule in novel information.
Abstract 6 items
Sequences and logic — extending patterns and deducing the next step.
Verbal 4 items
Vocabulary and analogies — reasoning with words and their relationships.
Numerical 3 items
Sequences and quantitative logic — detecting structure in numbers.
Answer, finish, understand.
One screen at a time
The test opens in a focused, full-screen view — the rest of the site disappears so nothing competes for your attention. No clock.
Scored in your browser
Your answers map to the IQ scale (mean 100, SD 15). Nothing is sent to a server.
Read your profile
Get your overall score, percentile, and a breakdown across all four domains.
Built on peer-reviewed items, not clickbait.
The questions draw on the International Cognitive Ability Resource — an open framework developed by researchers at Northwestern and validated across thousands of participants.
ICAR items correlate with gold-standard clinical measures like the WAIS-IV at roughly r = 0.70–0.85. A strong screening tool — honest about not replacing a clinician.
Good things to know.
How accurate is this test?+
It draws on ICAR items that correlate strongly with clinical measures like the WAIS-IV. No online test replaces a one-on-one clinical assessment, but this is a reliable, well-validated estimate — think well-informed screening, not diagnosis.
Do I need to sign up or pay?+
No. You can start immediately — no account, no email, no card. Your score and domain breakdown are free.
How long does it take?+
Most people finish the 33 questions in about 12–15 minutes. There's no time limit, so you can work at your own pace.
What happens to my answers?+
Scoring runs entirely in your browser. Your answers aren't sent to a server, and no personal information is required to take the test.
Can I take it on my phone?+
Yes — it's fully responsive. That said, a few spatial questions reward a larger screen, so a laptop or desktop gives the most comfortable experience.
Ready to find your number?
33 questions. About 15 minutes. Free, instant, no sign-up.