A free, hour-long IQ assessment that separates your thinking into three bands (perception, quantity and language) and recombines them into one precise score.
Each section is twenty questions long and starts easy. The puzzles change form every few questions, so you are measured on reasoning, not on getting used to one format.
Section one
Twenty interactive puzzles you solve with your eyes and hands. Find what changed between two night towns, turn objects in three dimensions, predict where moving shapes go next, picture punched paper unfolded and repeat sequences from memory.
Section two
Twenty number patterns written for this assessment and published nowhere else. Machines with hidden rules, numbers in orbit, towers of blocks and balanced scales. No formulas, only clear thinking, with a keypad built for speed.
Section three
Twenty questions about meaning, from analogies to formal deduction, answered in the language you think in. Typed answers are judged by meaning, so capital letters, accents and small slips never cost you a point.
Available in
English, Deutsch, Français, Español, Italiano, Português, Nederlands, Svenska, Norsk, Dansk, Suomi, Íslenska, Polski, Türkçe, Русский, العربية, हिन्दी, 中文, 日本語, 한국어
Each question carries a difficulty estimated from everyone who has answered it. Solving a hard question tells us more than solving an easy one, and lucky guesses on hard questions are discounted.
We estimate your ability with an item response model, the method behind modern standardized tests, and report your score together with its 90 percent confidence range.
Scores are normed on everyone who has completed Prism. 100 is the average of test takers and every 15 points is one standard deviation. The norms update as more results come in.
Current norms are based on 65 completed assessments and are recalculated as new results arrive.
Read how Prism was built and scoredYour result is ready the moment you finish. Nothing to install, no account to create.
Your Full Scale IQ with its confidence range, three index scores, your speed profile and how you did in each of the thirteen puzzle types. Download it as a PDF.
A certificate in your name with a unique number. Anyone can confirm it at whatsmyiq.org, and your name is stored encrypted so only your link can open it.
Yes. Prism is free while we collect results to calibrate its norms. You get the full result, the PDF report and your certificate at no cost, and no account is needed.
Exactly sixty minutes or less. The clock starts with the first question and keeps running, including during short section introductions. Most people finish with a few minutes to spare.
No. Questions come one at a time and every answer is final, the same as in a supervised test. You can skip a question you find too hard, but you cannot return to it.
Choose the language you read most comfortably. Only the third section uses words, and you choose its language right before it begins.
Yes. Your certificate arrives as a digitally signed PDF with its own number. Anyone can enter that number at whatsmyiq.org/verify to see the test, score and date, or drop the PDF there to confirm it was issued by us and never altered. Your name is never shown publicly.
Prism uses the same statistical model as modern standardized tests and reports a confidence range with every score. It is an estimate made under unsupervised conditions, not a clinical diagnosis.
Your name is only used on your certificate and is stored encrypted, readable only through your private certificate link. If you choose to receive your certificate by email, your address is handled as described in our Terms of Service and Privacy Policy.
Yes. Every certificate carries a unique number. Anyone can enter it at whatsmyiq.org/verify to confirm the score and date, without seeing your name.
The clock starts when you do and runs for sixty minutes. Your full result is ready the moment you finish.
Start the assessment
