Is an IQ of 200 Good? What It Means & Where You Stand
Classification
Theoretical Maximum
Percentile
>99.9999999th
Rarity
Fewer than 1 per billion
High
What Does an IQ of 200 Mean?
An IQ of 200 is at the theoretical extreme of human cognitive ability. Whether anyone has truly scored this high is debated — at this level, the concept of IQ measurement breaks down entirely. Claims of 200+ IQ scores (such as Marilyn vos Savant's listed 228 or Kim Ung-Yong's childhood score of 210) are controversial among psychologists. What is certain is that a vanishingly small number of humans possess cognitive abilities so extreme that they defy normal measurement and categorization.
An IQ of 200 places you at the >99.9999999th percentile, which means you scored higher than approximately >99.9999999% of the general population on a standardized intelligence test. This score falls into the Theoretical Maximum range on the IQ scale. With a rarity of Fewer than 1 per billion, 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 200
The concept of a 'career' barely applies at this theoretical level. Historical figures estimated near this range (if any truly reached it) are the once-in-a-civilization minds who fundamentally reshape human understanding. Whether such extreme cognitive ability translates to proportionally greater achievements is debated — many factors beyond IQ determine real-world impact.
How Does an IQ of 200 Compare?
Here's how a score of 200 compares to nearby IQ scores:
Nearby IQ Score Comparison
| Score | Classification | Percentile |
|---|---|---|
| IQ 190 | Unmeasurable | ~100th |
Frequently Asked Questions
Is an IQ of 200 possible?
It is theoretically possible but essentially unmeasurable. Standard IQ tests cannot validate scores above 150-160. Claims of 200+ scores are highly controversial among psychologists, as the statistical basis for such extreme scores becomes unreliable.
Has anyone had a 200 IQ?
Several claims exist: Marilyn vos Savant (listed at 228 in Guinness, later removed), Kim Ung-Yong (tested at 210 as a child), and William James Sidis (estimated 250-300, highly disputed). All such extreme claims are debated by IQ researchers.
What is the highest IQ ever recorded?
The highest reliably verified IQ scores are in the 180-200 range, depending on the test and methodology. Many psychologists argue that scores above 160 are not meaningfully comparable and should be treated as 'very high' rather than precise measurements.
Explore Other IQ Scores
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