users tested today / Avg. IQ Score: 100

Official IQ Test – Certified & Accurate!

Test your cognitive skills online!

Find your IQ score now!*

– The best IQ Test you can find online

– Certificate of completion and Performance report included.

– Created by the Brain Assessment CenterTM Research team.

– This test originated from a university project. As part of our commitment to rigor, we would like to inform you of the following: Your score is calculated by comparing your performance to other test-takers. This may give a general idea of your intellectual ability by showing how you cognitively compare to others. However, keep in mind no online test has diagnostic value nor can accurately give a definite result. Only in-person tests administered by a professional can accurately assess your IQ. Nevertheless, our test is one of the best options online to quickly and affordably obtain a broad estimate, as explicitly confirmed by other university researchers on ResearchGate.


The most legitimate and real iq test you can take online. Developed following best psychometric practices.

Real IQ Test at an affordable price

The most valid IQ test online. See how you compare for a super affordable price ($22.99).

Official & Certified

With certificate of completion. Developed and certified by the Brain Assessment Center™.


Taken by +50 thousand online test-takers. Are you smarter than them? See how you compare against others.

What is an official IQ Test exactly?

An official IQ test could be defined as an IQ test that is able to produce legit and reliable results. That’s what people commonly refer to by “official”. An accurate and real IQ test must have an acceptable degree of psychometric validity and reliability. Tests such as the Raven’s, the WAIS (Weschler Adult Intelligence Scale), or the Stanford Binet scale, are good examples of official IQ tests.

A test is said to have “psychometric validity” if what is being measured correlates with what the test actually intends to measure. If a test measures intelligence, it should correlate with how smart test-takers are, and not with, for instance, how high their emotional intelligence or their social skills are.

In the case of online IQ tests, their items must measure people’s fluid reasoning (also referred to as reasoning ability). This can be achieved by using items of different natures, such as mathematical ones, linguistic ones, or even spatial ones, but the thing is, the number of all these different types of items should be balanced.

Last, an IQ test is said to have psychometric reliability if it produces the same results (or very similar ones) after each administration. This concept is very easy to understand. If we measured the temperature of an object several times and we obtained a different result in each measurement, (let’s assume the real temperature was the same all the time) it would mean that our thermometer is not reliable; it is probably broken.

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How are real/official IQ Tests created?

Official IQ tests are created by carrying out a series of standardized steps and statistical analyses. In sum, in order to create an “official” IQ test , an organization must:

1. Gather a sample of test-takers that is representative of the normative population (or at least, of the population that will be the end user of the test). The sample should be large enough in order to achieve statistical significance.

2. Create a large sample of items aimed at measuring intelligence (fluid reasoning). These items should ideally be created by subject matter experts.

3. The initial sample of items should be given to the sample of test-takers. After performing certain statistical analyses with the participants’ results, it is possible to find what items are more robust and what items are less robust (in psychometric terms). the items that turn out to be less strong should be removed from the test.

4. It is also possible to find many other important aspects of the test: the mean number of correct answers, which items are easier and which items are more difficult, the standard deviation of correct answers, the reliability, the cohesion among items, among many other things. We also know now the percentage of people that could pass each given item.

5. The same sample of participants is then administered a test that has already been validated.

6. Last, the results from both tests are compared and correlated. If they are correlated, it means the newly created test is valid from a psychometric perspective (eg, if the participants that in our test had high scores, the ones that had low scores, and the ones that had average scores also have high scores, low scores, and average scores respectively in the already-validated test).

7. After some time, the same sample of test-takers should take our initial sample of items again, in order to see if the results that they get are the same or similar enough to those they got in the first administration. If these results are the same (or similar enough), we can conclude that the test also has psychometric reliability.

8. Now, every time a new test-taker takes the IQ test, their IQ score will be derived from calculating their intellectual performance in the battery of items relative to the performance of our initial sample of participants. For instance, if a new test-taker could get further than the items that just 20% of people answered correctly (or in other words, that 80% of our initial participants got wrong), that means this test-taker is at the 80th percentile of intelligence; this test-taker performed better than 80% of the population.

Please note that the process described is an oversimplification to make things easier to understand. In reality, the entire process is much more difficult and involves many more steps.

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Where to take a Real and Official IQ test?

You can take an official IQ test in any certified psychology clinic, in any HR firm or HR department willing to test you, in any faculty of psychology (which was also willing to test you) or even at school (assuming the psychology office has the necessary knowledge and resources).

However, what most people who want to take a real IQ test do is just go to a psychologist/psychology clinic that is trained in administering these tests. The entire testing process can cost between $300 and $1000.

One last option is to take an online IQ test. Online IQ tests can also have certain degree of reliability and validity if they have been developed properly enough. Online IQ tests can give a broad estimate/approximation of someone’s IQ and are really good to practice. However, they should not be used with diagnostic purposes or for drawing definitive conclusions. Online IQ tests are offered for informational or recreational purposes and not for being used as a valid assessment tool. No online IQ test can be as accurate as an in-person test administered by a professional.

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Can you take an official IQ test online?

Although it is true that online IQ tests cannot replace tests administered in person by a professional, they can still provide a very broad estimate of someone’s intellectual ability (assuming the test has been developed following best practices). If the reason why you want to get tested is just curiosity or intellectual recreation, the answer is yes, you can take an official IQ test online, and you can get results that are accurate enough or point you in the right direction; for certain purposes online IQ tests are valid enough. However, keep in mind online IQ tests should not be relied upon for drawing definitive conclusions nor for diagnostic purposes.

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What are the best official IQ Tests? List of Real IQ Tests:

According to the criteria of psychometric reliability and validity described above, the best real official IQ tests are :

1. The Brain Assessment Center’s Official IQ Test (It is probably one of the best IQ tests you will find online. However, keep in mind it was developed to be used for recreational purposes only. It should not be used as a diagnostic tool nor to derive definite conclusions).

2. The Raven’s Progressive Matrices (must be taken in person)

3. The WAIS (Weschler Adult Intelligence Scale) (must be taken in person)

4. The Official Mensa IQ Test (must be taken in person or online after paying a fee, which ranges from $40 to $100)

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See what other people are saying

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Johnson Miller
Great experience, very intellectually challenging. Best online IQ Test I have ever taken

I had to take a series of IQ tests long ago for some stuff related to the army. My score wasn't the best then because I was a bit nervous, I have always had performance anxiety. I am glad this time I have been able to score a bit higher (I guess it's been thanks to the fact that now I've taken it form the comfort of my home) even though this test felt much more difficult and stimulating.

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Kevin Ardolf
My score was the highest among my friends

We did the test to see who was the dumbest of us, just to have a bit of fun. The loser would have to pay for the results of the whole group. I knew I would not come out the silliest but I wasn't expecting to be the smartest either!

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Dale Kamren
Great test and great user experience

Solving this test - and getting all the questions right - was very intellectually pleasant and stimulating. It was without doubt a great experience!

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