What is the difference between IQ and EQ?

IQ measures reasoning and problem-solving ability; EQ measures how well you perceive, understand and manage emotions. A high IQ does not imply a high EQ.

Yes. The full IQ test, the result breakdown and the brain-training games are all free, with no signup.

What's Your IQ

Q: What is the average IQ score?

The average IQ is 100. Scales are built so the mean is 100 with a standard deviation of 15, so about two thirds of people score between 85 and 115 and roughly 95% between 70 and 130.

Q: What is a good IQ score?

Anything above 100 is above average. 110 to 119 is high average, 120 to 129 is superior, and 130 or higher is the gifted range, about the top 2% of people.

Q: What IQ do you need to join Mensa?

Mensa accepts scores at or above the 98th percentile on an approved test, about IQ 130 on a scale with a standard deviation of 15.

Q: Are online IQ tests accurate?

A well-designed online IQ test typically lands within about 5 to 10 points of a longer proctored test when taken rested and free of distractions.

HOW IT WORKS

Three steps. No filler questions.

Pick a length, answer at your own pace, read the breakdown.

Pick your lengthThe full test is 60 questions across four domains in about 30 minutes. The quick test is 20 questions; practice mode is 10 sample items.

10 to 60 itemsAlways free

Answer at your paceEach item has a soft two-minute cap, and you can skip and come back. Difficulty adapts to your previous answers: that's how the score gets calibrated.

Adaptive difficultyAuto-saves

Read the breakdownYour overall IQ, your percentile against research norms, and a score for each cognitive domain, on a page that's yours to keep.

IQ + percentile4 subscores

YOUR RESULT

Two people score 118. They don't think alike.

Most free tests stop at one number. Yours splits into verbal, spatial, logical and working-memory subscores, so you can see whether the total came from balanced strength or one heavy lift. Switch profiles to see the difference.

Overall IQ on the standard 100-mean, 15-SD scale.
Percentile against research norms and against recent test-takers.
Four subscores with a likely range for each.
A permanent link that's yours to save, share or ignore.

FULL-SCALE IQ118

88th percentileHigh average

Verbal117

Spatial119

Logical118

Working memory116

Every domain sits within a few points of 118. The total describes this person well.

ABOUT US

One test in 2020. A library today.

What's Your IQ began as a single 60-question IQ test, scored on the standard scale with the complete result shown free on one page. Everything since answers one question: what does someone need after they see their score?

Understand itA guide for every score and a four-domain breakdown.Improve itBrain-training games for each domain.Practise itWorked IQ questions and real-format aptitude tests.Place it in historyAn archive of 113 tests from 1880 to today.

WIndependent, ad-supportedEdited by Emir B. · editorial standards publicOur story →

OUR METHODOLOGY

From 60 answers to one number, in four steps

1Score each answerEach response is marked right or wrong. Working-memory answers must match the whole sequence exactly.

2Adapt and calibrateItems are chosen adaptively and each has a calibrated difficulty, so your ability is estimated from which items you solved, not just how many.

3Compare with other takersEach domain score is placed against the distribution of other takers, normed by age.

4Convert to the IQ scaleDomains are combined on the standard scale, mean 100 and SD 15, with a percentile and a likely range.

Adaptive difficultyItem-response scoringModern, age-normed resultsRead the methodology

15 THINGS, ALL FREE

What most free IQ sites don't give you

Start the IQ test →

MEASUREMENTAdaptive difficultyEvery answer picks the next item, so the test spends its questions near your level.

MEASUREMENTItem-response scoringEach item has a calibrated difficulty; your score reflects which items you solved, not just how many.

MEASUREMENTThe real scaleThe 100-mean, 15-SD scale researchers and clinicians use, not an invented “fun” score.

MEASUREMENTAge-normedCompared with people your age as well as all takers, so the score is fair at 18 or 68.

RESULTSFour domain scoresLogical, spatial, verbal and working memory, each on the IQ scale.

RESULTSPercentile + confidence rangeYour rank, plus the band your true score most likely falls in.

RESULTSCompare by country and ageSee where you sit against takers from your country and age group.

RESULTSLive community percentileAlongside research norms, your rank against people who took the test recently.

RESULTSDetailed PDF reportA full breakdown emailed to you: scores, strengths and what they mean.

RESULTSCertificateA shareable certificate with your score and test date.

RESULTSPermanent result linkEvery result gets its own permanent link. No account: bookmark it, share it, come back any time.

EXPERIENCENine languages, localised itemsVerbal items written for each language, with identical scoring everywhere.

EXPERIENCESection breaksThree checkpoints where the clock stops until you continue.

EXPERIENCE40 training gamesN-back, Stroop, mental rotation and more, each with its own live percentile.

INTEGRITYAnti-cheat checksTab switches and implausible response times are flagged, so results stay comparable.

BRAIN TRAINING

The test diagnoses. The games are the practice.

Forty games across nine cognitive domains, 5 to 15 minutes a session, each with a live percentile against other players. Tap any game to play it now.

Browse all 40 games

5 gamesWorking memoryHold and update information under load.Dual N-Back Operation Span Letter-Number Sequencing Corsi Blocks Digit Span

10 gamesAttentionFilter distractions and stay on target.Stroop Flanker Go No-Go Attentional Blink Posner Cueing Multiple Object Tracking Visual Search Continuous Performance Sustained Attention Vigilance Clock

6 gamesProcessing speedThe raw speed of cognition.Reaction Time Choice Reaction Inspection Time Digit-Symbol Coding Symbol Search Trail Making

6 gamesMemoryRecall across words, stories, faces and places.Word List Recall Story Recall Paired Associates Face-Name Pairs Card Match Pattern Memory

3 gamesFocus & flexibilitySwitch tasks, stop on a dime, hold your focus.Task Switching Stop Signal Breath Counter

2 gamesReading speedRead and name faster without losing accuracy.Speed Reader Rapid Naming

3 gamesSpatial reasoningRotate, locate and scan visual space.Mental Rotation Spatial Recall Useful Field of View

3 gamesPattern recognitionFind the rule behind shapes and sequences.Matrix Reasoning Sequence Completion Odd One Out

2 gamesVerbalWord relationships and fast vocabulary.Verbal Analogies Anagram Sprint

FROM THE INBOX

What people say after they finish

5,000+tests completed4domains scored9languages

”★★★★★after the full test

Love this site! The puzzles are genuinely entertaining, and it's so satisfying when you finally figure out a tricky one. I also really like the clean design and how easy it is to find new things to try.

SBSemra B.

“Really nice website for anyone interested in IQ tests and brain training. I liked that it offers different types of challenges instead of just one standard test. The design is clean and the puzzles are genuinely fun.”

MSMelikcan S.Software Engineer★★★★★

“Was mostly curious about my IQ score when I first checked out the site. Didn't realize there were so many other tests and little brain games too. I still go back occasionally when I'm bored.”

UKUtku K.★★★★★

MORE THAN IQ

When IQ isn't the question you're asking

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12 testsCareer fitMap your strengths to job families.

15 testsProgrammingPython, JavaScript, SQL and an algorithmic-thinking screener.

9 testsReasoningLogical, numerical and spatial reasoning as standalone tests.

11 testsLanguageVocabulary, grammar and comprehension in several languages.

20 testsAcademicPre-college and undergrad subject knowledge.

113 testsHistorical IQ testsThe tests that came before, from 1880 to today.

IQ, EXPLAINED

What is an IQ test?

An IQ test is a standardized assessment that scores your reasoning ability relative to the general population. Scores use a scale with an average of 100 and a standard deviation of 15, so 100 is exactly average and most people score between 85 and 115.

IQ score chart and bands

What does IQ 130 mean?

How we calculate your score

Can you train it?

What is the average IQ score?

100. Scales are built so the mean is 100 with a standard deviation of 15: about two thirds of people score between 85 and 115, and roughly 95% between 70 and 130.

What is a good IQ score?

Anything above 100 is above average. 110–119 is high average, 120–129 superior, and 130 or more is the gifted range, about the top 2%.

What IQ do you need for Mensa?

The 98th percentile on an approved test, about IQ 130 on a 15-SD scale.

Are online IQ tests accurate?

A well-designed one typically lands within about 5 to 10 points of a longer proctored test, if you take it rested and undistracted.

IQ vs EQ?

IQ measures reasoning and problem-solving; EQ measures how you perceive and manage emotions. A high IQ doesn't imply a high EQ.

All questions in the FAQ

How smart are you, actually?