Free IQ Tests & Brain Games
Patterns, puzzles, and pure brain power.
IQ tests measure a small slice of intelligence — but it's a real slice, and a useful one. Pattern recognition, logical reasoning, working memory, and verbal fluency all show up across most cognitive tasks, and they correlate with how quickly people learn unfamiliar things.
This category includes 21 brain games covering all the classical IQ subdomains: logical reasoning (deduction and conditional thinking), pattern recognition (visual and numeric), verbal reasoning (analogies and vocabulary), spatial intelligence (rotation and folding), working memory (digit and pattern span), and mental math. Plus puzzles, rebuses, riddles, lateral thinking, and one short cognitive bias screener.
Most tests run 3–5 minutes. All free, no signup, instant scoring with explanations.
Quick IQ Test
12 questions in 5 minutes — pattern, logic, number sense.
#12Logic Reasoning Test
Test how clearly you think through problems.
#13Pattern Recognition Test
Spot the rule. Visual and numeric patterns.
#14Number Series Test
Find the missing number in 12 timed sequences.
#15Verbal Reasoning Test
Analogies, vocabulary, and word logic.
#16Spatial Intelligence Test
Rotation, folding, mirrors, and 3D reasoning.
#17Memory Power Test
Number recall — memorize the growing sequence of digits.
#18Mental Math Test
Solve quick math problems under time pressure.
#19Brain Age Test
Is your mind younger or older than your real age?
#20Common Sense Test
Test your everyday judgment and practical thinking.
#21Observation Skills Test
How much do you really notice?
#22Street Smart or Book Smart
Life logic or academic thinking — where do you sit?
#23Puzzle Solving Test
12 classic logic puzzles and brain teasers.
#24Analytical Thinking Test
Cause-effect, base rates, and clean reasoning.
#25Left Brain or Right Brain
Logical, creative, or balanced — find your style.
#102Rebus Test
Decode the phrase from the visual layout.
#103Cognitive Bias Test
Find the thinking trap you fall into most.
#104Lateral Thinking Test
Sideways puzzles where the obvious answer is wrong.
#105Multiple Intelligences Test
Howard Gardner's 8 types — find your dominant one.
#106Riddles Test
12 classic riddles. Wordplay and double meanings.
#107General Knowledge Test
15 trivia questions across history, science, more.
Frequently asked questions
Are these real IQ tests?
They're cognitive screeners modeled after the same kinds of items real IQ tests use. They give you a useful relative score, but they're not standardized clinical instruments — for a true IQ score you'd need a proctored Wechsler or Stanford-Binet test administered by a psychologist.
What's a normal IQ score?
On standardized tests, the population mean is 100 and one standard deviation is 15 points. About 68% of people score between 85 and 115. A score above 130 is roughly the 98th percentile. Online tests vary in their scoring scales; check what each result page says.
Why are online IQ tests sometimes inflated?
Online tests often calibrate against a self-selected sample of test-takers (people who chose to take an online IQ test), which skews the comparison group. Real population-normed tests calibrate against representative samples and give more accurate percentile ranks.
Can I improve my IQ score?
Practice on similar tests will improve your score on those specific tests (test-specific learning), but the underlying ability — what psychologists call g — is mostly stable in adults. The biggest wins for most people come from sleep, exercise, and not being distracted while testing.
Should I time myself?
Yes, where the test asks you to. Speed is part of what these tests measure. If you spend 20 minutes on a 5-minute test, the score isn't comparable.