Measure Your IQ More Accurately
Check IQ™ is a reliable online IQ test that adapts question difficulty to your skill level, providing a faster and more accurate IQ assessment.
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293 are taking the test right now
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Recent IQ Test Results
United States | IQ Score: 101
United States | IQ Score: 110
Ukraine | IQ Score: 107
Malta | IQ Score: 108
United States | IQ Score: 103
United States | IQ Score: 109
San Marino | IQ Score: 126
United States | IQ Score: 109
United States | IQ Score: 101
Egypt | IQ Score: 104
United States | IQ Score: 100
Saudi Arabia | IQ Score: 107
United States | IQ Score: 107
United States | IQ Score: 94
Norway | IQ Score: 131
United States | IQ Score: 98
Ireland | IQ Score: 102
Finland | IQ Score: 132
Israel | IQ Score: 140
Sweden | IQ Score: 130
Why Take an IQ Test?
Taking an IQ test is not just a brain workout. An IQ test can result in a lasting impact in your personal life and in your career. Ultimately, it's about knowing yourself better, which is the key to success.
Create a Pivotal Moment in Your Life
Are you living up to your potential? Intelligence tests like CheckIQ can be the spark of confidence you need to change your life
Compare Your Intelligence to Your Peers
Over 700,000 people have taken our IQ test. See how your IQ compares to the average IQ and to people in your age group and country.
Discover Opportunities That Match Your Potential
Our reliable IQ test reveals your strengths, helping you choose the career and educational paths that fit you best
293 are taking the test right now
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As a large body of research now shows, IQ is also predictive of life outcomes
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High-IQ students achieve higher academic results than other students
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IQ is the single most important predictor of work success. It’s a very robust and very reliable predictor
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General cognitive ability is a significant predictor of performance in computer tasks
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Research indicates that IQ scores are a strong predictor of academic success
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Individuals with higher general intelligence can expect to enjoy more favorable life outcomes
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Zimmer P, Kirkegaard EOW. Intelligence really does predict job performance: A long-needed reply to Richardson and Norgate. OpenPsych. 2023; Published February 12, 2023. doi:10.26775/OP.2023.02.12. Available at: https://openpsych.net/files/papers/Zimmer_2023a.pdf.
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Guez A, Peyre H, Le Cam M, Gauvrit N, Ramus F. Are high-IQ students more at risk of school failure? Intelligence. 2018;71:32-40. doi:10.1016/j.intell.2018.09.003.
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Antonakis J. Does IQ determine success? A psychologist weighs in. CNBC. July 11, 2022. Available at: https://www.cnbc.com/2022/07/11/does-iq-determine-success-a-psychologist-weighs-in.html.
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Lintunen E, Salmela V, Jarre P, Heikkinen T, Kilpeläinen M, Jokela M, Oulasvirta A. Cognitive abilities predict performance in everyday computer tasks. Int J Hum Comput Stud. 2024;192:103354. doi:10.1016/j.ijhcs.2024.103354.
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Petruse R, Grecu V, Grecu V, Chiliban MB, Tâlvan ET. Petruse, Radu & Grecu, Valentin & Chiliban, Marius-Bogdan & Tâlvan, Elena-Teodora. (2024). Comparative Analysis of Mixed Reality and PowerPoint in Education: Tailoring Learning Approaches to Cognitive Profiles. Sensors. 24. 5138. 10.3390/s24165138.
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Vance GS, DeLecce T, Shackelford TK Men's general intelligence and heterosexual romantic relationship outcomes. Pers Individ Dif. 2025;233:112902. doi:10.1016/j.paid.2024.112902.
How To Measure Your IQ Online
You answer IQ questions
Find a quiet and comfortable environment to focus on the test. The IQ test questions are selected from a large database, starting with easier ones and becoming progressively harder based on whether you answer correctly. Answer the questions to the best of your ability without distractions. Don’t worry if you're unsure about some questions as you can skip them and return later!
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We calculate your IQ
We use the official method for IQ testing to calculate your score accurately and fairly. First, we calculate your raw IQ score by analyzing your answers, the time you take to respond, and the highest level you achieve out of 20 difficulty levels.
Next, we calculate your z-score, which shows how far your score deviates from the average IQ score of 100, based on standard deviations. Finally, this z-score is converted into a percentile, which indicates what percentage of the population scored lower than you. For example, if your percentile is 98, it means your score is higher than 98% of people.
Your results are also placed on a bell curve, a graph showing how IQ test scores are distributed across the population. Most people (about 68%) score between 85 and 115, which is considered the average IQ range. Scores above 130 are classified as "high IQ scores" or "gifted." Scores below 70 are considered lower IQ scores.
Get your IQ results
After completing the test, you’ll be able to get your IQ score along with detailed results and analytics. You’ll discover your IQ category, based on official IQ test standards, and gain deep insights into your cognitive skills to better understand your strengths and weaknesses. Additionally, you’ll have the option to download a personalized IQ test report and our official IQ test certificate to showcase your achievement.
What People Say
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I tried this test today after exploring a few other sites, and this one was by far the best
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Fun test to challenge yourself
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Been practising online IQ tests yearly ever since but it's hard to find a good online IQ test
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I tried this IQ testing site during my lunch break. Overall I'd say it delivers with it promises.
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Solid IQ test, got a 132 which is in line with WAIS I took 2 years ago (135) and Mensa 6 months ago (128 on first attempt)
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I'm weak in math and some of those questions were REALLY HARD for me
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A solid IQ test and one of the very few that increases difficulty dynamically
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I was pleasantly surprised by this IQ test, as it seems more rigorous than others I have had the opportunity to try
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Good non-verbal skills IQ test
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Not easy but serious. I took this online IQ test twice: the first time I scored 115, the second time 118
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An IQ test that provides a comprehensive analysis of your intellectual abilities. Highly recommended!
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The questions are more challenging than in other IQ tests, but the scoring is more accurate
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The questions in this IQ test are very diverse. The report is very detailed and easy to understand.
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The IQ itself is on par with the WISC-V I took a while back
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A big plus is that the questions adapt to your % of correct responses
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I initially tried this IQ test out of curiosity and ended up taking it three times
Features
100% dynamic
Unlike most online IQ tests that use the same set of questions for everyone, our test adapts to you by adjusting the difficulty of each question based on your previous answers. You start at Level 1 and progress through 20 levels of difficulty.
Backed by science
Our cognitive research team studied trusted IQ tests like the WAIS, the Stanford-Binet, and Raven’s Matrices. By learning from the best IQ tests, we’ve designed an accurate IQ test that combines elements of the classical IQ test and modern adaptive methodologies.
Designed for accuracy
As an adaptive IQ test, CheckIQ needs fewer questions to accurately assess your IQ. The result is a more accurate IQ test that measures your intelligence level in a fraction of the time required by traditional tests.
6,000+ questions
Over 6,000 original IQ test questions created by cognitive researchers and reviewed by psychologists. Each time you retake the test, you'll get new questions, ensuring an unbiased and accurate assessment.
Comprehensive
These IQ test questions cover a broad spectrum of cognitive abilities, including logical reasoning, pattern recognition, abstract reasoning, and spatial awareness, all evaluated under time constraints.
Daily updates
With daily updates and fresh questions, Check IQ™ evolves constantly through ongoing feedback and rigorous testing, ensuring a smarter, more dependable, and insightful IQ testing experience every time you take it.
Detailed analytics
Identify your strengths to areas for improvement, with detailed analytics that provide a comprehensive breakdown of your performance. See how you compare with people the same age and country.
IQ certificate
Showcase your intelligence with a personalized IQ certificate that shows the highest IQ score you've achieved.You'll also get a dedicated online link for sharing with your professional network.
Friends challenges
Make IQ testing more exciting and competitive by inviting your friends to CheckIQ with personalized invitations! Challenge them to take the test, compare scores, and see who ranks the highest!
What Kind of IQ Questions Will You Face?
Our IQ test challenges your mind with a variety of questions inspired by intelligence tests, designed to evaluate your logical, spatial, and numerical reasoning skills. As a real IQ test, it features scientifically validated formats found in standardized tests, such as pattern recognition, problem-solving, and sequence completion. Each question is crafted to provide an engaging and accurate measure of your intelligence, ensuring both a fun and meaningful assessment experience.
What Makes CheckIQ Better
Most Online IQ Tests |
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| Static test, less accurate |
| Same IQ test for everyone |
| Only 20 to 30 questions |
| Can't invite friends |
| Limited analytics |
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| Adaptive test, more accurate |
| IQ test adapts to your level |
| 6,000+ questions |
| Can invite friends |
| Advanced analytics, detailed reports |
113,874+
Over 113,874 test takers every month
1 in 52
1.92% have an IQ above 130 (high IQ)
1 in 319
0.31% have an IQ above 140 (genius level)
Trusted by 720,000+ users at leading schools, universities and companies
Our Latest Articles
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What Are the Pros and Cons of Online IQ Tests?
IQ tests used to be exclusive to psychological clinics, but now they are more easily accessible online. Here are the advantages and disadvantages of using an online IQ test.
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Emotional Intelligence (EQ) and Intelligence Quotient (IQ) are often compared to each other, leading many to believe they are in competition. But the reality is more complex.
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IQ tests are not one-size-fits-all. Initially used to identify students who need educational support, modern IQ tests now encompass a wider range of purposes
Frequently Asked Questions
What is an IQ test?
Is IQ the only measure of general intelligence?
Moreover, Howard Gardner's theory of multiple intelligences suggests that there are several distinct types of intelligence, including linguistic, musical, bodily-kinesthetic, interpersonal, intrapersonal, naturalistic, and existential intelligences. This shows that intelligence has many sides and depends on the situation. No single test can fully measure a person's abilities.
What does an official IQ test look like?
What are IQ scores and what do they mean?
- Below 70: Indicates significant challenges in intellectual functioning.
- 70–84: Below average intelligence, where extra support might be helpful.
- 85–114: Average intelligence, where most people (about 68%) fall.
- 115–129: Above average intelligence, often associated with strong problem-solving skills.
- 130–144: High intelligence, which is rare and typically seen in about 2% of the population.
- 145 and above: Exceptionally high intelligence, often referred to as "genius" or "near-genius" level.
What's a good IQ score?
While IQ is partly determined by genetics, certain activities can enhance your cognitive abilities and improve test performance. Regularly engaging in problem-solving exercises, practicing IQ test questions, and stimulating your mind in your free time through activities like puzzles, reading, and learning new skills can help.
How long does this online IQ test take?
How should I best prepare for this home IQ test?
Our IQ test generates new questions each time you take it, offering the same benefits as completing multiple practice tests while eliminating the bias of seeing repeated questions. This approach not only helps you prepare for our IQ test but also provides valuable intellectual stimulation, keeping the experience fresh and engaging. It’s also an excellent way to improve your IQ over time.
Should I retake this IQ test?
Are Online IQ Tests Real IQ Tests?
The best online IQ tests are adaptive, scientifically validated, and draw from established methodologies used in trusted tests like the WAIS, Stanford-Binet, and Raven’s Matrices. Reliable IQ tests like CheckIQ adjust the difficulty of questions dynamically based on your responses, ensuring a more personalized and accurate assessment of your cognitive abilities. Quick IQ tests that rely on a limited set of questions (ex: 15-20) are usually less reliable.
I have a high IQ. What’s next?
Membership in high IQ societies offers access to intellectual communities, exclusive events, and networking opportunities.
How is my IQ score calculated?
Is CheckIQ free?
For a small fee, you can access the full IQ test and receive:
- Your precise IQ score, benchmarked against a comprehensive database of test-takers.
- A personalized IQ certificate.
- Customized cognitive assessment reports with detailed insights.
- Advanced analytics to better understand and track your abilities.
- Access to additional IQ tests and the ability to retake tests for improvement.
- Exclusive features like inviting friends to compare scores and more.
Start Your IQ Test Now
Get your IQ within minutes
100% Adaptive
6,000+ Questions
Advanced Reports & Analytics