Free IQ Test — Get Your Score in About 10 Minutes

An IQ test is a standardized way to estimate how well you reason, spot patterns, and solve problems you haven't seen before. IQ is short for intelligence quotient. Early versions divided a child's mental age by their actual age, which is where the word quotient comes from. Today the math is different: your answers are compared against a large reference sample and placed on a bell curve with an average of 100.

IQ is short for intelligence quotient. The psychologist William Stern coined the term in 1912 to describe the ratio between a person's mental age and their actual age. The quotient label has stuck around even though modern scoring no longer divides one number by another. Your result simply reflects how your performance ranks against everyone else who has taken comparable items.

It's built on ICAR, an open, peer-reviewed item bank that lines up well with clinical tests such as the WAIS-IV. Independent studies have reported reliability and validity that hold up across large samples. It's a strong screening instrument, not a diagnosis. Read your result as a well-informed estimate, and see a licensed psychologist if you need a formal evaluation.

Most people finish the 33 questions in eight to twelve minutes. There's no countdown, so you can sit with a tricky item as long as you like. One practical tip: trust your first read on pattern questions. People who second-guess every answer usually do worse than people who commit and move on.

Your score shows where you land on a bell curve compared with the general population. The midpoint is 100, and roughly two out of three people score between 85 and 115. A result above 130 puts you in the top two percent or so. The number describes performance on a particular set of tasks. It says nothing about your worth, your character, or how far you'll go in life.

Using the WAIS-IV bands: 130 and above is Very Superior and sits in the top two percent. 120 to 129 is Superior. 110 to 119 is High Average. 90 to 109 is the Average band where about half of everyone falls. 80 to 89 is Low Average, 70 to 79 is Borderline, and below 70 is classified as Extremely Low. Each label marks a statistical position, nothing more.

Some of it can. Fluid reasoning, the kind you use on brand-new problems, tends to peak in your twenties and then ease downward. Crystallized knowledge, meaning your vocabulary and accumulated expertise, usually keeps climbing for decades. Schooling, a stimulating environment, and regular hard thinking all leave a measurable mark, so a single score is a snapshot rather than a life sentence.

Yes. Taking the test costs nothing and we never ask for a card or any payment. The only step before your full result is entering your email once on the results screen, which we use to send you your score. There's no charge at any point.

There's no account to create and no password, so you jump straight into the first question. To see your full result, you enter your email once on the results screen, and we use it to send you your score. That's the only thing we ask for.

Each of the 33 questions has one right answer. We count your correct responses, then map that raw total onto the deviation-IQ scale using a calibration curve aligned to the familiar average of 100 and a standard deviation of 15. You also get a separate score for each of the four domains, which is where you find out whether your verbal side or your spatial side is doing the heavy lifting.

Four of them. Abstract reasoning covers visual matrix patterns. Verbal reasoning covers vocabulary and word relationships. Numerical reasoning covers sequences and quantitative logic. Spatial reasoning covers mental rotation and visualizing shapes. Together they sketch a rounded picture of your general cognitive ability rather than one narrow slice.

You can, but a word of caution: once you've seen the items, your second score tends to drift upward simply because the questions feel familiar. Treat your first sitting as the honest one. If you do come back, leave a gap of a few months so the specific puzzles have faded from memory.

The WAIS-IV and the Stanford-Binet are administered one-to-one by a trained psychologist and run for an hour or more. They remain the gold standard for diagnosis. Our test draws on the same family of validated reasoning items and correlates well with those clinical tools, which makes it a dependable screen. It doesn't replace the adaptive questioning or professional interpretation you get in a full assessment.

Not quite. An IQ test captures a specific cluster of abilities, the reasoning and pattern skills that psychologists summarize as g. Real intelligence is wider than any single figure. Creativity, emotional insight, street smarts, and the knack for reading a room all count for a lot, and none of them show up cleanly on a standard IQ test.

It depends on what you're asking. A score of 100 is dead average, and most people land between 85 and 115. Anything above 120 is genuinely strong and puts you in roughly the top ten percent. Honestly, though, the chase for a magic number misses the point. The useful takeaway from a test like this is your profile, not a single threshold to clear.

The average is 100 by design. Test makers periodically re-norm the scale so the population mean stays put at 100 with a standard deviation of 15. In practice that means about half of all people score between 90 and 110, and roughly 95 percent fall between 70 and 130.

It nudges the odds. Decades of research tie higher scores to more schooling, better job performance, and higher pay on average. The link is real but loose. Drive, conscientiousness, social skill, and plain luck often decide the outcome, and in plenty of fields they matter more than raw reasoning. Cognitive ability opens doors; what you do once you're through them is on you.

Both, and the two are tangled. Twin studies put the heritable share of IQ variation somewhere between 50 and 80 percent, with the figure shifting by age and circumstance. Genes don't act in a vacuum, though. The same genetic potential plays out very differently depending on nutrition, schooling, and a stable home. Inheritance sets a range; environment decides where inside that range you land.

It's the steady rise in average IQ scores recorded across most of the twentieth century, on the order of three points per decade. Better nutrition, more years of schooling, and growing comfort with abstract problems are the usual explanations. Curiously, several wealthy countries have seen the trend flatten or even reverse in recent decades, and researchers are still arguing about why.

Parts of it slow down. Fluid reasoning, the speed you bring to unfamiliar problems, softens gradually after your mid-twenties. Crystallized intelligence, your store of words and know-how, often keeps growing into your sixties and beyond. The practical result is that an older mind may be slower on a timed puzzle yet sharper on anything that rewards judgment and experience.

It began in 1905, when Alfred Binet and Théodore Simon built a test to find French schoolchildren who needed extra help. Lewis Terman reworked it into the Stanford-Binet in 1916, and David Wechsler launched his own scales in 1939. The field has matured a great deal since then, and it has also had to confront an ugly chapter in which testing was bent toward eugenics and discrimination.

Take it rested, alert, and somewhere quiet. Don't rush, but don't agonize either; if a question stumps you, make your best guess and keep going. Skip it right after a heavy meal or late at night when your focus is gone. Most of all, come at it with curiosity rather than dread, because anxiety drags scores down.

ICAR stands for the International Cognitive Ability Resource. It's an open, public-domain pool of cognitive items developed by a research group led by William Revelle at Northwestern University. The items are free for scientific and educational use, have been validated across multiple studies, and correlate strongly with commercial tests. In effect, ICAR opened up serious psychometrics to everyone.

Yes. The layout is fully responsive, the tap targets are sized for thumbs, and nothing scrolls sideways on a small screen. A few spatial questions reward a larger display, so a tablet or laptop gives you a slightly easier look at the fine detail, but a phone works perfectly well.

Your individual answers are scored in your browser and aren't sent anywhere. The one piece of personal data we collect is the email you enter to unlock your result, which is sent securely to our form provider so we can deliver your score. We don't ask for your name, and we don't collect anything else — the full details are in our privacy policy.