Free IQ Test

IQ (intelligence quotient) is a standardized score that compares your reasoning ability to the general population. It's built on a normal distribution with a mean of 100 and a standard deviation of 15, so most people score near 100. Rather than measuring everything about 'how smart' someone is, IQ mainly captures pattern recognition, logical reasoning, and problem-solving.

This test is a reliable educational estimate, not a clinical diagnosis. It's based on Raven's Progressive Matrices and CHC theory with an internal reliability (Cronbach's alpha) of about 0.85-0.92, which is good for a cognitive test. For an official assessment you would need a proctored test such as the WAIS or Stanford-Binet, administered by a psychologist.

The test takes about 10-20 minutes to complete. It uses visual matrix questions that get progressively harder, so you can work at a steady pace without needing any special knowledge. Answering thoughtfully matters more than rushing, since the patterns are designed to test reasoning rather than speed alone.

A score of 120 or higher is generally considered good, placing you in roughly the top 10%. On the standard scale, 100 is exactly average, 110-119 is above average, 120-129 is superior, and 130+ is gifted. Because of the bell curve, about 68% of people score between 85 and 115.

Your IQ score can shift modestly, though your core ability is relatively stable. Education, sleep, practice with test-style questions, and even your mood on the day can move a score by a few points. Fluid reasoning can improve a little with training, but large permanent gains are not well supported, since general intelligence is substantially heritable.

Mensa accepts people who score in the top 2% of the population, which corresponds to an IQ of about 130 or higher on a standard scale with SD 15. The exact qualifying score depends on which approved test you take, since different tests use slightly different scales. Roughly 1 in 50 people meet this threshold.

IQ measures reasoning and problem-solving ability, while EQ (emotional intelligence) describes how well you recognize and manage emotions in yourself and others. They are largely independent, so a high IQ does not guarantee a high EQ or vice versa. Both contribute to real-world outcomes, and EQ is especially linked to social and workplace skills.

IQ scores are age-adjusted, so they compare you to others in your age group rather than to everyone. Different abilities peak at different times: fluid reasoning tends to peak in early adulthood, while crystallized knowledge (vocabulary and accumulated facts) can keep growing for decades. This is why a well-designed IQ test stays meaningful across the lifespan.