Is an IQ of 155 Good? What It Means & Where You Stand
Classification
Exceptionally Advanced
Percentile
99.99th
Rarity
1 in 10,000
High
What Does an IQ of 155 Mean?
An IQ of 155 is extraordinarily rare — at the 99.99th percentile, only about 1 in 10,000 people reach this level. Standard IQ tests cannot reliably measure at this height, and specialized high-range tests are necessary. Individuals at this level possess cognitive abilities that are qualitatively different from the general population. They often master new fields in weeks rather than years and make intuitive leaps that others cannot follow without extensive explanation.
An IQ of 155 places you at the 99.99th percentile, which means you scored higher than approximately 99.99% of the general population on a standardized intelligence test. This score falls into the Exceptionally Advanced range on the IQ scale. With a rarity of 1 in 10,000, this score is uncommon and indicates strong cognitive abilities.
To understand how IQ scores are calculated and what they measure, see our complete guide on what IQ is and how it works. For a full breakdown of all score ranges and their meanings, visit our IQ score ranges page.
Career Context for an IQ of 155
People scoring 155 are found at the absolute pinnacle of their fields — Nobel laureates, Fields Medal winners, transformative inventors, and revolutionary thinkers. Many make contributions that reshape entire disciplines. Traditional career structures may feel constraining.
How Does an IQ of 155 Compare?
Here's how a score of 155 compares to nearby IQ scores:
| Score | Classification | Percentile |
|---|---|---|
| IQ 140 | Genius-level | 99.6th |
| IQ 142 | Genius-level | 99.7th |
| IQ 145 | Very Gifted | 99.9th |
| IQ 148 | Very Gifted | 99.95th |
| IQ 150 | Exceptionally Advanced | 99.96th |
Frequently Asked Questions
Is 155 a good IQ score?
A 155 is among the rarest scores possible on standard tests. At the 99.99th percentile, only about 1 in 10,000 people score this high. It represents extraordinary cognitive ability.
Can standard tests measure 155 IQ?
Not reliably. Standard tests like the WAIS are normed for the general population and lose precision above 145-150. Specialized high-range tests or extended administrations are needed for accurate measurement at this level.
Who has an IQ of 155?
Verified scores at this level are rare. Some notable individuals estimated at or near 155 include various Nobel Prize winners, Fields Medal mathematicians, and pioneering scientists. Exact scores for historical figures are always estimates.
Explore Other IQ Scores
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