Question
Can you take an IQ test for free?
Short answer
Yes. Many online IQ tests are free to take, including IQ Octopus. What varies is what happens at the end: some show a free score, some charge once for the full result, and some start a subscription. Read the pricing before you begin, and remember that no online test gives an official or clinical IQ.
Want your own number? The test is 25 visual puzzles, about 12 minutes, no sign-up.
The three common models
- Free test, free score. Often a short quiz paid for by advertising. Check how the score is calculated before trusting it.
- Free test, one-time payment for the result. You take the whole test before deciding. This is how IQ Octopus works.
- Free test, subscription at checkout. A trial that renews unless you cancel. Read the checkout page carefully.
Our free vs paid comparison explains what each model pays for and what to check.
Try one · Quantitative Reasoning
Which number comes next?
6, 10, 17, 27, 40, ?
Tap the option you think is right, or show the answer.
Show the answer
The next number is 56 (option 1).
How to solve it
- Find the gaps between neighbors: 4, 7, 10, 13.
- The gaps between the numbers grow by 3 each time.
- So the next gap is 16, and 40 + 16 = 56.
That was 1 puzzle. The full test has 25.
What IQ Octopus gives you for free
The test itself: 25 visual puzzles, about 12 minutes, no sign-up. You also get free 10-question practice tests with an instant practice score, and hundreds of puzzles with worked answers. The full result, with your estimated IQ, percentile, confidence range and five-area breakdown, is $4.95 once. Nothing renews. See pricing.
What no online test can give you
An official IQ comes from a standardized test given by a licensed psychologist. Online tests, free or paid, give an estimate. They cannot be used for Mensa admission, school placement, disability assessment or employment screening. If you need a score for one of those, read how to find out your IQ.
Before you start any free test
- Find the price of the result before you answer the first question.
- Look for a method page that explains the scoring.
- Check whether the result shows a range or only a single flattering number.
- Check whether checkout mentions a trial or renewal.
For more on judging quality, read are online IQ tests accurate.