- A score of 140 or above is the traditional genius threshold.
- 130+ is the 'very superior' band, the highest standard category on tests like the Wechsler scales.
- Genius-level scores are vanishingly rare and get exponentially rarer as the number climbs.
- Einstein never took a modern IQ test, so any figure quoted for him is an estimate, not a measurement.
- The highest claimed IQs (such as William Sidis or Marilyn vos Savant at around 228) are unverified and rely on outdated ratio-scoring methods.
What IQ score is considered genius?
A score of 140 or above is the traditional genius threshold. This cutoff comes from Lewis Terman's early Stanford-Binet classifications, where 140+ was labeled 'genius or near genius.' Modern tests have largely retired the word 'genius' as imprecise, preferring measured categories instead.
What does 'very superior' (130+) mean?
130+ is the 'very superior' band, the highest standard category on tests like the Wechsler scales. It marks the top 2% of the population (98th percentile) and is the same cutoff Mensa uses for gifted-level intelligence. About 1 in every 44 people scores at or above 130.
How rare is a genius-level IQ?
Genius-level scores are vanishingly rare and get exponentially rarer as the number climbs. Roughly 1 in 261 people reach 140, about 1 in 741 reach 145, and only about 1 in 31,560 reach 160. Because the bell curve thins so quickly at the top, each extra five points represents a dramatic jump in scarcity.
What was Einstein's IQ?
Einstein never took a modern IQ test, so any figure quoted for him is an estimate, not a measurement. The commonly cited '160' is a retrospective guess, not a real score. His scientific achievements demonstrate extraordinary insight, but no validated IQ result exists for him.
What is the highest IQ ever recorded?
The highest claimed IQs (such as William Sidis or Marilyn vos Savant at around 228) are unverified and rely on outdated ratio-scoring methods. Modern deviation-based tests are not considered reliably valid much above 160, so extreme three-digit figures cannot be meaningfully compared to today's scores. Treat any 'highest IQ' claim with healthy skepticism.
Elite IQ Tiers and How Rare They Are
| IQ threshold | Classification | Percentile | Rarity (1 in N) |
|---|---|---|---|
| 130+ | Very superior / gifted (Mensa cutoff) | 98th (top 2%) | 1 in 44 |
| 140+ | Genius (traditional Terman label) | 99.6th (top 0.4%) | 1 in 261 |
| 145+ | Highly gifted | 99.9th (top 0.1%) | 1 in 741 |
| 160+ | Profoundly gifted / near test ceiling | top ~0.003% | 1 in 31,560 |
β People also ask
What Is a Good IQ Score?
An IQ of 100 is exactly average; 110-119 is above average, 120 and up puts you in the top 10% (a genuinely 'good' score), and 130+ is considered gifted. IQ is built on a normal distribution with a mean of 100 and a standard deviation of 15, so most people cluster near the middle.
What Is a Good IQ Score? βIQ Percentile Chart: What Percentile Is My IQ?
Your IQ percentile tells you the share of people you scored higher than: an IQ of 100 is the 50th percentile, 115 is about the 84th, 120 is roughly the top 10%, and 130 is roughly the top 2%. The table below maps every major IQ band to its classification, percentile, and share of the population.
IQ Percentile Chart: What Percentile Is My IQ? βAre Online IQ Tests Accurate?
A well-designed online IQ test gives a reliable estimate of your reasoning ability, but it is not a clinical diagnosis β only a proctored test like the WAIS or Stanford-Binet provides that. This test is built on Raven's Progressive Matrices and CHC theory, scored on the standard scale (mean 100, SD 15), with an internal reliability (Cronbach's alpha) of about 0.85-0.92.
Are Online IQ Tests Accurate? βCan You Increase Your IQ?
You can meaningfully sharpen reasoning skills, working memory, and test performance through training and education, but raising your underlying general intelligence (g) substantially and permanently is not well supported β core g is largely heritable. The honest answer is that some gains are real and some popular claims are overstated.
Can You Increase Your IQ? βAverage IQ by Age: Why It's Always 100
The average IQ is 100 at every single age, from children to seniors, because IQ tests are age-normed to your own age group. 'Average IQ by age' charts that show rising or falling numbers are misleading, since the scoring is recalibrated for each age band.
Average IQ by Age: Why It's Always 100 β