How is my IQ score calculated?
Your percentage correct across the four domains is mapped onto the familiar 100-mean, 15-point-per-deviation IQ scale, the same scaling clinical tests use. This is a self-assessment built to be encouraging rather than a clinical diagnostic, so every completed result reads at or above the population average of 100, up to 145 for a perfect run. The breakdown across pattern, verbal, numerical, and logic domains tells you where to focus.
What does the IQ scale actually mean?
IQ scores are scaled so that 100 is the average and each 15 points is one standard deviation. That means roughly two-thirds of people score between 85 and 115, about 95% fall between 70 and 130, and only a small fraction sit beyond either end. A score is always relative to the reference group, not an absolute measure of how 'smart' someone is.
What is a good IQ score?
Anything near 100 is, by definition, average and completely normal. Scores above 115 are above average, above 130 are often labelled 'very superior,' and below 85 indicate areas worth supporting. But IQ predicts only a slice of real-world success, motivation, conscientiousness, and emotional skills matter at least as much, which is why pairing this with the Big Five gives a fuller picture.
What is the difference between fluid and crystallized intelligence?
Fluid intelligence is your ability to reason and solve new problems on the spot, independent of what you already know, it peaks in early adulthood and gradually declines. Crystallized intelligence is your stored knowledge, vocabulary, and skills, and it keeps growing well into later life. This test's pattern, numerical, and logic items lean fluid; the verbal items lean crystallized.
Does a high IQ guarantee success?
No. IQ correlates with academic and some career outcomes, but it explains only part of the variation in real-life achievement. Traits like persistence, curiosity, emotional regulation, and the ability to work with others also matter. A high score is an asset, not a destiny, and a lower score is not a ceiling.
Can IQ tests be biased or affected by my mood?
Yes. Performance on any IQ test is affected by sleep, stress, caffeine, familiarity with the question format, language, and cultural background. That is one reason a single quick test is directional rather than definitive. If you are tired or distracted, your score can easily move several points, treat one result as a snapshot, not a verdict.
How long is the IQ test and is it free?
It is 20 questions and takes most people about 6 minutes, with no time limit, so you can work at your own pace. The test, your score, the four-domain breakdown, and the shareable result card are all free, no signup or payment required.
Is this the same as a Mensa IQ test?
No. Mensa admission uses supervised, professionally scored tests (such as the Cattell or Wonderlic) administered under controlled conditions. This is a free online self-assessment that covers the same cognitive domains for self-reflection and fun, but it is not an official, proctored exam and cannot be used to qualify for high-IQ societies.
Does IQ change with age?
Your IQ score, which is always measured relative to your age group, stays fairly stable across adulthood, but the underlying abilities shift. Fluid reasoning tends to peak in the late teens to twenties and slowly declines, while crystallized knowledge keeps rising for decades. So an older adult can score the same 100 as a younger one while relying on a very different mix of cognitive strengths.
32 questions
14 min