16 Personalities
Discover your four-letter personality type
About this test
16 personality types based on four dimensions: how you recharge (Introvert/Extravert), take in information (Sensing/Intuition), make decisions (Thinking/Feeling), and organize your life (Judging/Perceiving). Over 50 million people have taken a version of this test. Whether you're an INTJ architect or an ESFP performer, the result usually lands with an uncomfortable degree of accuracy.
Dimensions measured
- Extraversion–Introversion
- Sensing–Intuition
- Thinking–Feeling
- Judging–Perceiving
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Frequently Asked Questions
What is the MBTI personality test?
The Myers-Briggs Type Indicator (MBTI) categorizes people into 16 personality types based on four dimensions: Extraversion/Introversion, Sensing/Intuition, Thinking/Feeling, and Judging/Perceiving. Each combination creates a unique type like INTJ or ENFP that describes how you process information and make decisions.
Is MBTI scientifically valid?
MBTI has mixed scientific support. While it's the world's most popular personality test (used by 88% of Fortune 500 companies), academic psychologists note issues with test-retest reliability — about 50% of people get a different type when retaking it. It's best used as a conversation starter about personality differences, not a definitive label.
What's the rarest MBTI type?
INFJ is generally considered the rarest type, making up about 1-2% of the population. INTJ and ENTJ are also quite rare. The most common types tend to be ISFJ and ISTJ. However, these percentages vary across cultures and studies, so take them as rough estimates.
Can your MBTI type change over time?
Your core preferences tend to be stable, but how you express them evolves with life experience. Many people develop their less-preferred functions as they mature — an introvert might become more socially skilled, though they'll still need alone time to recharge. Major life events can also shift how you use your preferences.
16 Personalities
16 personality types based on four dimensions: how you recharge (Introvert/Extravert), take in information (Sensing/Intuition), make decisions (Thinking/Feeling), and organize your life (Judging/Perceiving). Over 50 million people have taken a version of this test. Whether you're an INTJ architect or an ESFP performer, the result usually lands with an uncomfortable degree of accuracy.