A single-format matrix reasoning IQ test, free to take with no registration. Thirty questions in twenty-five minutes, scored on the standard scale where the average is 100. Your full score report — IQ estimate, percentile, and difficulty breakdown — is a one-off £9.99.
Most online IQ tests are a grab-bag of riddles: a word puzzle here, a number trick there, an anagram to finish. Mixed-format tests like that measure nothing coherent, because every question tests a different skill contaminated by vocabulary, arithmetic, and general knowledge.
This test uses one format for all thirty questions: matrix reasoning, the same task family used by the most respected cognitive assessments in the world. You study a 3×3 grid of tiles governed by hidden rules, work out the rules, and choose the missing tile from six options. Difficulty rises by adding rules, not visual clutter — which means harder questions genuinely demand more from your working memory and abstract reasoning, the abilities most closely tied to general intelligence.
Because the test is entirely non-verbal, it works the same whether English is your first language or your fourth, and no amount of trivia knowledge helps you. Just patterns, logic, and time pressure.
No registration, no email address, no practice round needed. The first questions ease you in; the last ten are genuinely difficult.
Thirty matrix reasoning questions with a twenty-five minute limit. Answer each question once, in order. Your response times are recorded alongside your answers.
Your answers are scored the moment you finish, against every rule in every question, and mapped onto the standard scale where the average is 100.
Your full report shows your IQ estimate on the standard scale, your percentile, and your accuracy and speed across three difficulty bands. One-off £9.99.
IQ is scored on a scale where 100 is the average by definition, with a standard deviation of 15 points. That means about 68% of people score between 85 and 115, roughly 95% score between 70 and 130, and only around 2% of people score above 130.
Your report places you on this scale and tells you the percentage of test takers you scored higher than. It also breaks your performance into three difficulty bands — foundation, intermediate, and advanced — with your accuracy and average response time in each, so you can see not just your score but the shape of your reasoning.
This test is an indicative measure of cognitive ability. No online test, including this one, is a substitute for a professionally administered clinical assessment.
No subscription, no trial that rolls into a monthly charge, no card details to take the test. You only pay if you want your full report — and you know the price before question one.
Six guides covering the whole scale, what the numbers mean, and how far to trust any of them.
Most writing about raising IQ repeats a claim rather than checking one. These trace each answer back to the primary literature, with every study named and linked.