Best free IQ test (CORE)
The CORE is the best free IQ test without requiring strong English
By আলোর ফ.
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
133 reviews
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CognitiveMetrics offers tests that have been developed by the professionals in the fields of psychology and cognitive science, with millions of test takers to base your score against.Our tests have been proven to load on intelligence at a comparable level to professional tests such as the Weschler Adult Intelligence Scales and Stanford-Binet Intelligence Scales.
CognitiveMetrics (cognitivemetrics.com) has 133 customer reviews on The Fair Hearing, with an average rating of 4.2 out of 5.
133 approved reviews, newest moderated first
The CORE is the best free IQ test without requiring strong English
By আলোর ফ.
really good!
By Aditya K.
It's a fun little test that it managed to capture my suspected adhd. I'm adult now and it doesn't hurt to test officially if I truly have that.
By AKACS
I think the Core test is very accurate. I had some neuropsychology tests in the UK at one of our hospitals and the cognitive portions of those tests pretty much tracked with the Core scores. The only one that didn't was processing speed (PSI). I scored below the 1st percentile at the hospital but in the 95th percentile here - that's a radical difference and they are measuring slightly different processing speeds, but close enough that there should be some correspondence. However, this actually makes complete sense too, and the Core can absolutely be correct as I had a severe brain issue at the time of the tests at hospital, and the jump between processing speeds is accounted for by that, I believe - as my brain fog lifted as I got better, my processing speeds improved.
By Miss No T.
So far, so good! I haven't ventured into the paid tests yet, but I am taking the core, and have taken the big five personality test, and I am really impressed by the depth of these tests. I feel this is the most accurate personality test I've ever taken, and the portion of the core that I've taken seems accurate, as well. I'm just really impressed by the amount of work that has been put into this site, and can't wait to continue exploring it!
By Karen A.
With so many psychological tests online being unscientific garbage, it’s nice to have a place online that carries reliable tools analogous to those used by professional scientists and psychologists. CORE is a very impressive project, and probably the best IQ test publicly available at time of writing.
By Dylan
I enjoyed taking the CORE test and I hope to see the evolution of it, hopefully this project gets to the point where it's professionally realised! I'm not sure what the 1 star reviews are on about though, I'm guessing they were told they have a low IQ lol
By Alexander
i've seen many website about iq test and this is the best without a doubt, all the test are correctly normed, and you can even read the manual of the core test.
By Emiliano M.