Been practising online IQ tests yearly ever since but it's hard to find a good online IQ test
Garry X.United States
I tried this IQ testing site during my lunch break. Overall I'd say it delivers with it promises.
Kendall B.United Kingdom
Solid IQ test, got a 132 which is in line with WAIS I took 2 years ago (135) and Mensa 6 months ago (128 on first attempt)
Tom B.United Kingdom
I'm weak in math and some of those questions were REALLY HARD for me
Nick S.United States
A solid IQ test and one of the very few that increases difficulty dynamically
Maxim L.United States
I tried this test today after exploring a few other sites, and this one was by far the best
John P.United States
I was pleasantly surprised by this IQ test, as it seems more rigorous than others I have had the opportunity to try
Nadine B.France
Good non-verbal skills IQ test
FelixTaiwan
An IQ test that provides a comprehensive analysis of your intellectual abilities. Highly recommended!
Deirdre Van den K.Belgium
The questions are more challenging than in other IQ tests, but the scoring is more accurate
Emilio S.Spain
The IQ itself is on par with the WISC-V I took a while back
Maxim L.United States
A big plus is that the questions adapt to your % of correct responses
FelixTaiwan
Not easy but serious. I took this online IQ test twice: the first time I scored 115, the second time 118
Sybille V.France
I initially tried this IQ test out of curiosity and ended up taking it three times
Toby G.United States
The questions in this IQ test are very diverse. The report is very detailed and easy to understand.
Yann S.Germany
Frequently Asked Questions
Can you explain the difference between the free and paid IQ test?
The free IQ test is a quick, fun way to estimate your IQ with 10 fixed questions. It’s great for a general idea, but not as precise.
The full IQ test, however, is much more advanced. It adapts to your skill level, includes 25 carefully designed questions, and provides a far more accurate result. Plus, you’ll get access to detailed analytics, extra retakes, and even a certified IQ certificate!
How long does the IQ test take?
The free IQ test takes around 10 minutes, but there’s no time limit—you can go at your own pace.
The full IQ test is designed to take up to 25 minutes, and the time is limited to keep the challenge accurate.
Which IQ test is the most accurate?
Our full IQ test is the most accurate. It uses 25 adaptive questions, meaning the difficulty adjusts to your responses in real time, giving a more precise IQ score. This is the same methodology used in official cognitive assessments.
Do you offer other plans?
Yes! We offer additional plans with extra features, including:
More retake options to improve your score
Official QR-verified certificate
Personalized link to showcase your highest IQ score
Advanced cognitive analytics with deeper insights
Ability to compare your IQ with friends
You can explore these options after completing the full IQ test.
Can I access CheckIQ on any device?
Yes! You can take the test on any device—mobile, tablet, or desktop. Everything is optimized for a smooth experience.
Paid users also get access to a secure dashboard where they can track their IQ scores, review results, and retake tests anytime.