Use this calculator to easily calculate the percentage of the population who score at or above a specific IQ test. Easily convert an IQ score to percentile and rarity (e.g. 1 out of 10).
Quick navigation:
- What is IQ?
- Brief history of intelligence measurement
- Usefulness of IQ measurement
- IQ percentile and rarity
- Classification of intelligence scores
What is IQ?
CI means"Intelligence quotient"and is a measure of human intelligence determined by standardized tests. It is expressed in aQI-Skalawhich is defined as most people with an IQ between 80 and 120 (cf.QI-Skalasection for more details and how to interpret your IQ score). It's not a very intuitive scale, many people want to see theirsPercentil de QIor weirdness, which our IQ percentile calculator above is ideal for.
Brief history of intelligence measurement
Attempts to measure intelligence date back to at least the 19th century, but well-developed tests weren't invented until the mid-20th century. Early applications included screening impoverished populations to screen talented students for recruitment into the US Army. These tests come in many forms: some are primarily visual, others include language and skills, basic math, three-dimensional spatial tasks, and logic questions, but what they all have in common is that they try to determine the g-factor, or common factor in performance. of a person Rate the person on all tasks: Intelligence.
The g factor was first observed by the British psychologist Charles Spearman, who noted a highcorrelationat grade levels in seemingly unrelated subjects, arguing that these correlations reflect the influence of a general mental ability that is expressed in all kinds of mental tasks. This was confirmed by the inability to generate mental tasks that are not g-loaded, i.e. performance on these tasks is not correlated with general intelligence.
Usefulness of IQ measurement
IQ test results are valuablebecause of its high or moderate correlation with morbidity, mortality, school performance, job performance, income, involvement in crime, and others[3,4,5,6]🇧🇷 They are among the most tested and researched concepts in psychology and psychometrics. As with any other statistical estimate, IQ scores can be problematic when used at an individual level, for example. While you would generally expect someone with a high IQ to do well in an engineering job, they can do worse than someone with a low IQ, even if they have the same education and experience. However, when trying to assess a person's aptitude for a mental task, the most informative information is an IQ percentile obtained from a reliable test.
The IQ Scale: How to Interpret an IQ Score
IQ tests are designed and updated regularly to match the populations they accurately measure: a score of 100 is the population mean, and the distribution of IQ scores and percentiles is in normal form with a standard deviation of 15. IQ So is convenient to interpret and work with if you're a statistician, but if you don't like statistics, the number itself probably means little to you. Here's ourQI percentile calculatorcan help you calculate the percentile of the population you are in and therefore the rarity of your score.
For example, with an IQ of 125, you would be in the top 5%, the 95th percentile of the population. This means that only 1 in 20 people randomly selected from a large population will have a score equal to or higher than yours. The following IQ scale shows whatpercentageof the population falls into different ranges of IQ scores, for example, 13.6% of people have an IQ score between 115 and 130 by definition.
Above is an IQ rarity chart (also known as an IQ percentile chart) showing what percentage of the population is between various values and what percentage of the population is above some key values.
IQ percentile and rarity
Below are some common cutoff points for IQ test scores and their corresponding percentiles and oddities.
| IQ test result | percentile | superior a X% | rarity |
|---|---|---|---|
| 100 | 50 | 50% | 1 em 2 |
| 104 | 60 | 40% | 1 em 2,7 |
| 108 | 70 | 30% | 1 em 3.3 |
| 110 | 75 | 25% | 1 of 4 |
| 113 | 80 | 20% | 1 of 5 |
| 115 | 84 | 15,87% | 1 em 6.3 |
| 119 | 90 | 10,00% | 1 of 10 |
| 125 | 95 | 5,00% | 1 of 20 |
| 129 | 97,5 | 2,50% | 1 of 40 |
| 135 | 99 | 1,00% | 1 of 100 |
| 139 | 99,5 | 0,50% | 1 of 215 |
| 147 | 99,9 | 0,10% | 1 em 1157 |
| 156 | 99,99 | 0,001% | 1 of 10,581 |
Let's say your IQ score is 120. You can check that row in the table and you'll see that you're in the 90th percentile, which is in the top 10% of the reference population. If you check the rarity column, you'll see that such a score is seen by around 1 in 10 people.chosen at random.
Some numbers in the table above are approximate for readability. Using the calculator above is the best way to get accurate numbers, whatever your IQ score: 120, 130, 135, 140, 142, 160... You'll see percentiles (80, 90, 95, 99, etc. ) according to the IQ scale and its rarity relative to one in X people. Similarly, you can use to show 99th percentile (135th) IQ score, etc.
Classification of intelligence scores
There are different ways to classify IQ scores, e.g. is the Stanford-Binet classification[1]:
- (40-54) - moderately worsened or delayed
- (55-69) - slightly worsened or delayed
- (70-79) - deteriorated or delayed limit
- (80-89) - medium low
- (90-109) - Average
- (110-119) - medium high
- (120-129) - superior
- (130-144) - gifted or highly developed
- (145-160) - very talented or very advanced
Others prefer more neutral and less descriptive terms, such as "low-end" and "high-end" or "extremely low" and "extremely high". It should be noted that this is all relative to the general population. A person with an IQ of 115 is likely to be in the lower echelons compared to a room full of nuclear physicists (with an average IQ of 130 or higher), despite being above that.Averagerelative to the general population.
Types of IQ Tests
existmany IQ teststhat you can take today is the most famous[2]:
- Raven's progressive matrices
- III Cattell Cultural Fair
- Reynolds scales for intellectual assessment
- Thurstone's Primary Mental Abilities
- Kaufman short intelligence test
- Fitness Multidimensional Battery II
- Das-Naglieri's cognitive assessment system
Most tests are standardized so that their mean score is 100 and their standard deviation is 15, which makes calculating a percentile using trivia.CDF normal distribution🇧🇷 Some tests use a different standard deviation: 16, 24, etc., which is oursQI calculatorlets you specify the standard deviation of the test that generated the IQ score.
How reliable are IQ measurements?
IQ scores obtained through rigorous testing by a trained psychologist or psychometrist are usually the most reliable and provide information about how well your cognitive skills are performing in addition to your IQ score (e.g., spatial reasoning, verbal ability, processing auditory). , short- and long-term memory, etc. Standardized tests conducted as part of a High IQ Society exam (eg Mensa) are also quite reliable. Finally, there are different types of online tests, free and paid, with varying degrees of reliability. In all cases a certain measurement error must be assumed, normally a measurement error of 3 points is taken into account. So if your score is 115, it's very likely that your actual score is between 112 and 118. Your average is often the best way to get a more reliable estimate of your general intelligence.
Younger people (under the age of 18) should be aware that an IQ score obtained on a standard IQ test will likely be lower than it really is, though not by much, especially if you are over 10 years old. Age test. 🇧🇷 The reason for lower scores could be that the brain is not yet fully developed (for men up to age 25!) and environmental factors have not had time to fully express themselves.
Can I increase my IQ?
If it's an IQ score from a test, there are ways to study the test questions and memorize the answers if you know which test will be given. However, this only reflects your exam ability and not your overall mental ability. With that in mind, it's possible to increase your IQ, but why would you do that? You can cheat on an IQ test or an IQ calculator, but not yourself or the people you interact with.
When it comes to increasing true intelligence, we really don't know how to go about it. There are studies that tell us that malnutrition, abuse, abandonment, etc. during childhood and adolescence can lead to lower intelligence; however, there is no known way to improve a person's general intelligence despite attempts to perform mental tasks, identify diet plans, lifestyle changes, etc. below the IQ percentile.
references
[1] Kaufman, S. (2009) “IQ Testing 101”, New York: Springer Publishing. Pages. 112. ISBN 978-0-8261-0629-2
[2] Article "Intelligence Quotient" on Wikipedia, [online] Available at: https://en.wikipedia.org/wiki/Intelligence_quotient [access date: 19.09.2018]
[3] Gordon (1997) "Everyday life as an intelligence test - intelligence effects and intelligence context",intelligence24(1), S. 203–320, DOI: 10.1016/S0160-2896(97)90017-9
[4] Gottfredson (1997) "Why g matters: The complexity of everyday life",intelligence24(1), S. 79–132, DOI: 10.1016/S0160-2896(97)90014-3
[5] Wai & Lincoln (2016) "Examining the Right Side of Wealth: Education, Cognitive Ability, Generosity, Network Strength, Gender, Ethnicity, Leadership, and Other Characteristics",intelligence54 S.1-32, DOI: 10.1016/j.intell.2015.11.002
[6] Ganzach & Amar (2017) "Intelligence and paying off high and low impact debts",personality and individual differences110, S.102–108, DOI: 10.1016/j.paid.2017.01.037
FAQs
How do you calculate IQ percentile? ›
The percentile of a score is the percentage of people who score equal to or below the score**. For example, an IQ score of 70 is in the 2nd percentile (for SD = 15), which means that only 2% of people score 70 or lower. IQ 125 is at the 95th percentile - 95% of people have an IQ equal to or less than 125.
What is the 99.9 percentile IQ? ›...
Triple Nine Society.
| Formation | 1978 |
|---|---|
| Website | www.triplenine.org |
An IQ 145 would place you in the highest echelons of this society's highly clever people. This category includes well-known scientists, politicians, businesspeople, and philosophers whose discoveries have impacted the world. Approximately 99.7% of the population has an IQ between 55 and 145.
What is the IQ of Elon Musk? ›Elon Musk IQ is close to this starting point, with an estimated score of 155. The typical genius has an IQ of around 140.
How do I calculate my IQ score? ›- Wechsler adult intelligence scale (WAIS) ...
- Mensa practice test. ...
- Stanford-Binet intelligence scales (SBIS) ...
- Brain metrics initiative (BMI) online IQ test. ...
- Woodcock-Johnson (WJ) test of cognitive abilities. ...
- IQ test labs. ...
- Raven's progressive matrices (RPM) ...
- Psychtests.
A gifted child's IQ will fall within these ranges: Mildly gifted: 115 to 130. Moderately gifted: 130 to 145. Highly gifted: 145 to 160.
How rare is 130 IQ? ›Just 2.2 percent have an IQ of 130 or greater. What's fascinating is that people who score well on one of the tests tend to score well on them all.
What IQ is genius? ›Notably, the average IQ score falls between 85 and 115. A score above 140, meanwhile, is considered to be genius level.
What IQ do the top 1% have? ›An average person scores 100 on an IQ test using the Stanford-Binet IQ scale. A score of 137 to 160 is considered the top 1 percent to . 01 percent of all scorers.
How rare is a 122 IQ? ›An IQ 122 score is considered high. Individuals with this score outperform 92.9 percent of their peers in their age group. On a credible IQ test, only around one out of every ten people would score so high.
What was Albert Einstein's IQ? ›
Smarter than Einstein? Albert Einstein likely never took an IQ test but is estimated to have a 160 IQ—but even that can't stand up to these masterminds.
Is 99th percentile IQ good? ›Approximately 98–99th percentiles on standardized tests. Terms Highly to Exceptionally Gifted or Very Advanced on IQ tests. IQ scores of about 130 to 140. One or two per grade level, more in high socioeconomic schools.
Is 120 a good IQ? ›An IQ score over 140 indicates that you're a genius or nearly a genius, while 120 - 140 is classed as "very superior intelligence". 110 - 119 is "superior intelligence", while 90 - 109 is "normal or average intelligence".
Is 165 a high IQ? ›115 to 129: Above average or bright. 130 to 144: Moderately gifted. 145 to 159: Highly gifted. 160 to 179: Exceptionally gifted.
What is Mark Zuckerberg IQ? ›No one knows what Mark Zuckerberg IQ is since he failed a conventional IQ test. Various sources, however, estimate it at 152 IQ based on biographical data, publications, and achievements. He is regarded as a genius and among the world's most intellectual individuals.
What is Bill Gates IQ? ›Bill gates: iq of 160 | MARCA English.
Who has a 400 IQ? ›Adragon De Mello: IQ 400
In 1988, when Adragon De Mello graduated from the University of California, Santa Cruz, with a degree in computational mathematics at the age of 11, he was the youngest college graduate in the United States (a record he no longer holds).
The IQ 125 score is substantially above the norm on all measures, as the typical range on most scales is 90 to 109. On certain current scales, such a high score is also referred to as "above average." In any case, it is one of a kind.
Who has the highest IQ in the world? ›Kim Ung-Yong
He holds the Guinness World Record for IQ at 210 and he was invited as a guest student in physics at Hanyang University when he was three year old. He was invited to America by NASA at age eight, he worked at the space organization for ten years and then returned to Korea.
An IQ of 120, therefore, implies that the testee is brighter than about 91% of the population, while 130 puts a person ahead of 98% of people.
How is IQ calculated with age? ›
IQ was originally computed by taking the ratio of mental age to chronological (physical) age and multiplying by 100. Thus, if a 10-year-old child had a mental age of 12 (that is, performed on the test at the level of an average 12-year-old), the child was assigned an IQ of 12/10 × 100, or 120.
What is the top 1 percentile of IQ? ›An average person scores 100 on an IQ test using the Stanford-Binet IQ scale. A score of 137 to 160 is considered the top 1 percent to . 01 percent of all scorers. Frank Lawlis, director of psychological testing for American Mensa, also joined the discussion on The Daily Circuit.
Is 120 IQ smart? ›An IQ score over 140 indicates that you're a genius or nearly a genius, while 120 - 140 is classed as "very superior intelligence". 110 - 119 is "superior intelligence", while 90 - 109 is "normal or average intelligence".
How rare is an IQ of 130? ›Just 2.2 percent have an IQ of 130 or greater. What's fascinating is that people who score well on one of the tests tend to score well on them all.
Does your IQ rise as you age? ›Does an individual's IQ change with age? An individual's IQ does not change with age. In other words: if you did an IQ test now and then another one in 10 years' time, your IQ score will probably be very similar. This is because IQ is always measured relative to other people your age.
Does your IQ increase with age? ›Abilities change, but IQ scores tend to be very stable. However the intelligence ability is changing during the life, the IQ (intelligence quotient) does not. This measure is defined to have mean of 100 in each age group. So the average IQ e.g. in the age 5 is 100, and the same in the age 50.
Is IQ your mental age? ›The IQ was originally computed as the ratio of a person's mental age to his chronological (physical) age, multiplied by 100. Thus, if a child of 10 had a mental age of 12 (that is, performed on the test at the level of an average 12-year-old), then the child was assigned an IQ of (12/10) X 100, or 120.
Who is no 1 IQ person in the world? ›Kim Ung-Yong
He holds the Guinness World Record for IQ at 210 and he was invited as a guest student in physics at Hanyang University when he was three year old. He was invited to America by NASA at age eight, he worked at the space organization for ten years and then returned to Korea.
By the current "deviation IQ" definition of IQ test standard scores, about two-thirds of all test-takers obtain scores from 85 to 115, and about 5 percent of the population scores above 125.
Who has the highest IQ ever? ›The appropriately named Marilyn vos Savant is in a class of her own. According to Guinness World Records, her astonishing IQ of 228 is the highest ever recorded. The daughter of an Italian and a German immigrant, vos Savant was born in St. Louis, Missouri, in 1946.
Can you raise your IQ? ›
We concluded that prolonged intensive training in creative problem-solving can lead to substantial and positive effects on intelligence during late adolescence (ages 18–19).