Free IQ Test Online
Discover your intelligence quotient with our accurate, scientific assessment
• 15 challenging questions to assess your cognitive abilities
• 15 minute time limit - test your speed and accuracy
• Get your detailed IQ score and personalized analysis
• Compare your results with others globally
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How Our Free IQ Test Works
Why Take Our Free Online IQ Test?
Frequently Asked Questions
Famous IQ Scores
Albert Einstein
Stephen Hawking
Leonardo da Vinci
Terence Tao
Marilyn vos Savant
Judit Polgar
IQ Statistics & Records
Average IQ Scores
The average IQ score is set at 100 with a standard deviation of 15 points. This means:
- 68%Score between 85-115 (Average range)
- 14%Score between 115-130 (Above average)
- 2%Score above 130 (Gifted range)
Highest Recorded IQs
The highest IQ scores ever recorded or estimated:
- William James Sidis250-300 (Est.)
- Terence Tao225-230
- Marilyn vos Savant228
- Christopher Hirata225
- Kim Ung-Yong210
Celebrity IQ Scores
Scientists
- Einstein 160-190
- Newton 190-200
- Hawking 160
- Feynman 125
Actors/Actresses
- Natalie Portman 140
- James Woods 180
- Mayim Bialik 163
- Matt Damon 160
Business Leaders
- Bill Gates 160
- Elon Musk 155
- Mark Zuckerberg 152
- Jeff Bezos 150
Musicians
- John Lennon 165
- Madonna 140
- Lady Gaga 166
- Shakira 140
Note: Celebrity IQ scores are often estimated or reported figures and may not have been officially tested using standardized methods.
Understanding IQ Tests
Intelligence Quotient (IQ) tests are standardized assessments designed to measure human cognitive abilities. Modern IQ tests evaluate a range of cognitive skills, including:
- Logical reasoning and problem-solving
- Pattern recognition and analytical thinking
- Spatial awareness and visualization
- Mathematical ability and numerical reasoning
- Verbal comprehension and language processing
IQ scores follow a normal distribution with a mean of 100 and a standard deviation of 15. This means about 68% of the population scores between 85 and 115, while only about 2.1% score above 130 (considered "very superior") or below 70.
The concept of IQ was first proposed by psychologist William Stern in 1912, and the first modern IQ test was developed by Alfred Binet and Théodore Simon in 1904, initially to identify students who needed extra help in school.
While IQ tests provide valuable insights into cognitive abilities, it's important to remember that intelligence is multifaceted and includes aspects that traditional IQ tests may not fully capture, such as creativity, emotional intelligence, and practical skills.