Mensa IQ Test | GuideIQ

Mensa is the world's largest and oldest high-IQ society, with over 145,000 members in 100+ countries. Membership requires scoring in the top 2% on a standardized IQ test. Here's everything you need to know about qualifying.

What Is Mensa?

Founded in England in 1946, Mensa International is a non-profit organization open to anyone who scores at or above the 98th percentile on an approved intelligence test. The name comes from the Latin word for "table" — symbolizing equality among members.

Mensa has no political or religious affiliations. Its stated purpose is to identify and foster human intelligence for the benefit of humanity, and to provide a stimulating intellectual and social environment for its members.

Mensa IQ Score Requirements

Percentile Required

98th or above

Typical IQ Score

130+ (SD=15)

Population

Top 2%

The exact IQ score required depends on the test used and its standard deviation. On tests with SD=15 (like WAIS, Stanford-Binet 5), the cutoff is approximately IQ 130. On tests with SD=24 (like the Cattell), the cutoff is approximately IQ 148.

How to Join Mensa: Step by Step

Take a qualifying test

Either take the official Mensa supervised test, or submit prior evidence from an approved test (WAIS, Stanford-Binet, etc.) taken within the last 2 years.

Submit your application

Apply through your national Mensa organization (e.g., American Mensa, British Mensa). Include test results and pay the application fee.

Receive your results

If you qualify, you'll receive a membership invitation. If not, you can retake the test after a waiting period.

Become a member

Pay annual dues and gain access to local groups, events, publications, and the global Mensa network.

Approved Tests for Mensa Membership

Test	SD	Qualifying Score
WAIS-IV (Wechsler Adult)	15	130+
Stanford-Binet 5	15	130+
Cattell Culture Fair	24	148+
Raven's Advanced Progressive Matrices	15	130+
Official Mensa Supervised Test	15	130+

What Is the Mensa Test Like?

The official Mensa supervised test (in the US, called the Mensa Admission Test) consists of two separate tests:

Test 1: Timed, multiple-choice questions covering logical reasoning, pattern recognition, and spatial ability
Test 2: A different format covering similar cognitive domains
Duration: About 2 hours total including instructions
Format: Supervised, in-person at a Mensa testing center
Scoring: You need to qualify on at least one of the two tests

How to Prepare for the Mensa Test

Practice matrix reasoning

Raven's Progressive Matrices are the closest to Mensa-style questions

Work on number sequences

Identify patterns in numerical series quickly

Spatial reasoning practice

Mental rotation and 3D visualization exercises

Timed practice tests

Speed matters — practice under time pressure

Get adequate sleep

Sleep deprivation can lower IQ scores by 5–10 points

Take our online test first

Get a baseline estimate before the official test

Benefits of Mensa Membership

Global network — connect with 145,000+ high-IQ members worldwide
Local groups — regular meetups, events, and activities in your area
Publications — access to Mensa's journals and newsletters
Special Interest Groups (SIGs) — hundreds of groups covering every topic imaginable
Scholarships — Mensa Foundation offers scholarships for students
Discounts — member discounts on various products and services

Can Online IQ Tests Qualify You for Mensa?

Important Note

Online IQ tests (including ours) cannot be used for official Mensa membership. Mensa requires supervised testing by an approved proctor. However, online tests are excellent for gauging whether you're likely to qualify before investing time and money in the official test.

If you score 130+ on our test, it's a strong indicator that you may qualify for Mensa. We recommend taking the official Mensa practice test as a next step, then scheduling the supervised admission test if you score well.

Frequently Asked Questions

How much does the Mensa test cost?

In the US, the Mensa Admission Test costs approximately $40. Prices vary by country. The test can be retaken after a waiting period (usually 6 months to 1 year).

What is the minimum age for Mensa?

There is no minimum age. Mensa has members as young as 2 years old (with parental consent for minors). There are also special programs for gifted youth.

Can I use my SAT or ACT scores for Mensa?

Scores from before 1994 may be accepted. More recent SAT/ACT scores are generally not accepted as they were re-normed and are no longer considered IQ-equivalent tests.

What percentage of people qualify for Mensa?

Exactly 2% of the population qualifies. In the US, that's about 6.5 million people, but only about 57,000 are actual members.

Mensa IQ Test: Requirements, How to Qualify & What to Expect

Check If You Might Qualify for Mensa