Mensa Qualifying Score
Understanding IQ test scores and what you need to qualify for Mensa membership. Different tests have different numeric cutoffs, but all require the top 2%.
Qualifying Scores by Test
| Test Name | Std. Deviation | Qualifying Score | Notes |
|---|---|---|---|
| Wechsler (WAIS, WISC) | 15 | 130+ | Most common scale worldwide |
| Stanford-Binet 5 | 16 | 132+ | Slightly higher numeric cutoff |
| Cattell III B | 24 | 148+ | Used by UK Mensa |
| Raven's APM | 15 | 130+ | Culture-fair matrix test |
| Mensa Admission Test | 15 | 130+ | Official Mensa-designed test |
Understanding IQ Percentiles
IQ percentiles indicate what percentage of the population you've scored higher than. The 98th percentile means you've outperformed 98% of people—only 2% score higher.
Why Do Qualifying Scores Differ?
Standard Deviation Matters
IQ tests use different standard deviations in their scoring. The Wechsler uses SD 15 (most common), Stanford-Binet uses SD 16, and Cattell uses SD 24.
Despite different numeric scores, all represent the same percentile (98th) and the same cognitive ability level.
Consistent Percentile Requirement
Mensa's requirement is always the top 2%, regardless of which test you take. This ensures fairness across different testing methods.
Whether you score 130 on WAIS or 148 on Cattell, you've demonstrated the same level of cognitive ability.
How to Qualify for Mensa
Take an Approved Test
Either schedule Mensa's own supervised admission test or submit prior evidence from an approved standardized test.
Score in the Top 2%
Achieve a score at or above the 98th percentile on your chosen test.
Submit Your Application
Apply to your national Mensa organization with your qualifying test results.
Welcome to Mensa!
Once approved, you'll join a global community of high-IQ individuals.
Frequently Asked Questions
What is the minimum IQ for Mensa?
The minimum IQ for Mensa is a score at or above the 98th percentile. On the Wechsler scale (most common), this is 130. On the Stanford-Binet scale (SD 16), this is 132. On the Cattell scale (SD 24), this is 148.
Can I retake the Mensa test if I don't qualify?
Yes, you can retake the Mensa admission test, but most Mensa organizations require a waiting period of at least 12 months between attempts.
Is 129 IQ close enough for Mensa?
Unfortunately, 129 does not qualify for Mensa. The cutoff of 130 (or 98th percentile) is firm. However, test performance can vary, so it may be worth retaking after practicing.