Take scientifically-designed IQ tests that accurately measure your cognitive abilities. Professional assessments with instant results and detailed analysis.
Sample question
Which piece completes the pattern?
Pick the piece that fits the empty square.
NewFree while we calibrate the norms
Sixty puzzles across three kinds of thinking: interactive visual challenges, number patterns written from scratch and verbal reasoning in your own language. Scored with the statistical model behind modern standardized tests.
Learn about the science behind IQ testing, how scores are calculated, and what they really mean for cognitive assessment.
Intelligence Quotient (IQ) is a standardized measure of human intelligence and cognitive ability. IQ tests assess various mental capabilities including logical reasoning, problem-solving, pattern recognition, mathematical ability, verbal comprehension, and spatial awareness.
Developed by French psychologist Alfred Binet in the early 1900s, modern IQ tests are based on psychometric principles and calibrated against large representative samples. The average IQ score is set at 100, with a standard deviation of 15 points.
Each dot is one simulated score on a scale with a mean of 100 and a standard deviation of 15.
| Score | Classification | Share of people |
|---|---|---|
| 130+ | Very Superior (Top 2%) | 2.3% |
| 120-129 | Superior | 6.8% |
| 110-119 | High Average | 16.1% |
| 90-109 | Average | 49.5% |
| 80-89 | Low Average | 16.1% |
| 70-79 | Borderline | 6.8% |
Our assessments are designed using established psychometric principles and follow standardized testing methodologies.
Tests are calibrated against large representative samples using statistical methods to ensure accurate scoring and reliable results.
Receive immediate comprehensive results with detailed breakdowns of performance across different cognitive domains.
Your score is compared against a diverse sample of test-takers, ensuring fair and accurate percentile rankings.
Your test results are private and secure. No personal information is stored or shared without explicit consent.
Choose from our professionally designed IQ tests, each tailored to measure different aspects of cognitive intelligence.
A short culture-fair IQ test of logical reasoning, pattern recognition and visual problem-solving. Every question uses shapes, sequences and spatial patterns instead of words, so it suits any language background.
A short reasoning test based on numbers, sequences and simple arithmetic patterns. All tasks are non-verbal and require recognizing numeric rules, progressions and transformations. No english skills are required.
Sixty interactive, numerical and verbal puzzles in sixty minutes. A full-spectrum IQ estimate with three index scores, a detailed report and a certificate.
Experience the difference with scientifically-designed assessments that provide accurate, reliable, and meaningful insights into cognitive abilities.
Based on established psychometric principles with standardized scoring methodologies used by educational and psychological professionals.
Receive detailed results including your IQ score, percentile ranking, performance breakdown by question type, and statistical analysis.
Your score is calculated relative to a representative sample of test-takers, ensuring fair and accurate percentile-based comparisons.
Your test results remain private and secure. No personal information is stored or shared without your explicit consent, in compliance with privacy standards.
Take tests on any modern device. Our responsive design ensures optimal performance and usability across desktop, tablet, and mobile platforms.
Beyond scores, receive explanations of question types, cognitive domains tested, and guidance for interpreting and understanding your results.
Our IQ tests are designed using established psychometric principles and follow standardized testing protocols to ensure reliable and valid results.
Scores are calculated relative to a representative sample, ensuring fair percentile rankings.
Tests evaluate logical reasoning, mathematical ability, verbal comprehension, and spatial reasoning.
Consistent testing conditions with clear instructions and standardized timing protocols.
Statistical validation ensures test-retest reliability and construct validity of measurements.
Explore comprehensive, science-based articles about IQ testing, intelligence measurement, and cognitive assessment.
Meet Prism, our new sixty-question IQ assessment. Interactive visual puzzles, original number patterns and verbal reasoning in 20 languages, scored with an item response model and free while we calibrate the norms.
IQ scores are standardized measures of cognitive ability, but what do the numbers actually represent? This comprehensive guide explains IQ score ranges, percentiles, standard deviation, and how to interpret your results accurately.
Understanding the differences between online IQ tests and professional assessments helps you choose the right evaluation method. Learn about accuracy, validity, use cases, and when each is appropriate.
The history of IQ testing spans over a century, from Alfred Binet's first intelligence test to modern assessments like the WAIS. Learn about the evolution of intelligence testing and key developments.
Understanding test validity and reliability is crucial for interpreting IQ test results. Learn how online IQ tests compare to professional assessments and what factors affect accuracy.
IQ tests come in many forms: verbal tests requiring language skills, non-verbal tests using visual patterns, and culture-fair tests minimizing cultural bias. Learn about the different types and when each is most appropriate.
Our IQ scoring methodology is based on established psychometric principles, specifically inspired by norm-referenced scoring methods used in professional assessments. The calculation process considers both accuracy and time efficiency, comparing your performance to other test-takers.
Example result
7 of 10 correct
Higher than 64% of test-takers
1:30 faster
than test-takers with the same accuracy
IQ 112
Higher than 79% of test-takers
n = 2,000
A bigger sample makes every percentile more precise
Your accuracy, the percentage of questions answered correctly, forms the primary component of your score. This is calculated relative to all other test-takers, establishing your accuracy percentile ranking.
We also analyze how quickly you solve problems, but only in comparison to others with similar accuracy levels. This prevents fast but incorrect answers from inflating scores. The time component is weighted based on your accuracy. If you're highly accurate, solving problems quickly is rewarded more significantly.
Your final IQ score is determined by comparing your combined performance (accuracy and time) to a representative sample of other test-takers. This percentile-based approach ensures that scores are meaningful and comparable, following the same principles used in professional IQ assessments like the WAIS and Stanford-Binet.
As more people take our tests, the sample size grows, making percentile rankings increasingly accurate. This is a significant advantage over traditional norming, which typically uses samples of 1,000-2,000 people. Our growing database allows for more precise population estimates and more reliable IQ score calculations. The larger the sample, the better we can represent the actual distribution of human intelligence.
Our IQ tests are based on established psychometric principles and intelligence theory. Below are valuable resources for learning more about intelligence testing and cognitive assessment.
