What This IQ Test Measures
This IQ test measures a sample of cognitive reasoning skills, including abstract pattern recognition, numerical reasoning, verbal reasoning, and logical deduction.
It is inspired by standard psychometric ideas such as the g factor, matrix reasoning, normal distribution scoring, and transparent norming. It does not copy Raven's Progressive Matrices, WAIS, WISC, Mensa, Wonderlic, or any proprietary test.
How To Read Your Score
Your result is an estimated IQ score on the standard scale where 100 is average and 15 points is one standard deviation. The score includes a confidence range because a short online test should never pretend to have clinical precision.
| Score | Range | Percentile Context |
|---|---|---|
| Under 90 | Developing / Below Average | Below about 25th |
| 90 to 109 | Average | About 25th to 73rd |
| 110 to 119 | Above Average | About 75th to 90th |
| 120 to 129 | Superior | About 91st to 97th |
| 130+ | Exceptional / Gifted | About 98th and above |
Why Percentiles Matter
A percentile tells you how a score compares with a norm group. An IQ of 100 is near the 50th percentile, while an IQ of 130 is near the 98th percentile.
How Online IQ Tests Differ From Clinical Tests
Clinical tools such as WAIS-IV, Stanford-Binet 5, and WISC-V are standardized, supervised, and interpreted by trained professionals. This free test is for education and self-reflection only.
Use it as a useful snapshot of reasoning style, not as a diagnosis, school placement decision, or proof of giftedness.
Result Ranges
IQ Knowledge Hub
Explore the full guide cluster for score charts, methodology, Mensa requirements, the Flynn Effect, fluid and crystallized intelligence, and practice questions.
Famous IQ Scores
Famous IQ score lists are usually estimates rather than verified records. Treat them as cultural trivia unless a modern standardized test record is available.
| Person | Common Claim | Reliability Note |
|---|---|---|
| Albert Einstein | Often listed around 160 | Estimated, not from a verified modern IQ test |
| Marie Curie | Often listed in a high range | Estimated from achievement, not a clinical score |
| Richard Feynman | Often discussed near 125 | Based on disputed biographical reporting |
Frequently Asked Questions
Is this IQ test free?
Yes. The test is free, and the estimated score is shown instantly with no email gate or paywall.
Is this a clinical IQ test?
No. This is an educational estimate for self-reflection, not a clinical or diagnostic assessment.
How is the score calculated?
The test counts correct answers, maps the raw score to a standard IQ estimate, then shows a confidence range and percentile.
Are my answers private?
Yes. Scoring runs in your browser. Your answers are not sent to a server.
What domains does the test measure?
The test samples abstract, verbal, numerical, and logical reasoning with a strong focus on fluid reasoning.
Can children use this test?
This page is built for general self-reflection. Children need age-normed tools such as WISC-V administered by a qualified professional.