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Personality Type Test: Which of the 16 Types Are You?

Wondering which personality type you are? This free 16 personality types test answers exactly that: twenty short statements, an instant result with your type code, its own type name, and the profile behind it. An MBTI alternative built on the scientifically established Big Five model (public-domain Mini-IPIP items), not on the classic type questionnaires. Anonymous, not a diagnosis.

16 Types Personality Test (Mini-IPIP, Big Five based)

How accurately does the statement describe you in general?

20 questions~3 minanonymous, scored in your browsernot a diagnosis

Grounded in the Big Five model

This test uses the Mini-IPIP, 20 public-domain items (Donnellan et al. 2006) that measure the Big Five: extraversion, agreeableness, conscientiousness, neuroticism, and openness. Four items per dimension, each rated by how accurately it describes you. Four of those dimensions map onto the familiar letters: extraversion to E or I, openness to N or S, agreeableness to F or T, and conscientiousness to J or P. Neuroticism is reported separately as emotional stability, a fifth dimension shown openly alongside your type.

How to read your result

Treat the four letters as orientation and as language for what makes you tick. No type is better or worse, every position has its strengths. Where a dimension sits close to the midpoint we flag it as a close call, because then both letters fit you to some degree. For the fuller picture, take the Big Five test on this site: the same item family, but a complete profile across five continuous dimensions.

The 16 types at a glance

Each type is a tendency, not a box, and the names are our own wording: INTJ (Planner), INTP (Thinker), ENTJ (Director), ENTP (Spark), INFJ (Meaning-maker), INFP (Idealist), ENFJ (Mentor), ENFP (Enthusiast), ISTJ (Organizer), ISFJ (Caretaker), ESTJ (Coordinator), ESFJ (Host), ISTP (Tinkerer), ISFP (Creator), ESTP (Doer), ESFP (Energizer). Your result shows your code and type name along with the five dimension scores behind it, so you can see how clear or close each letter really is.

Trademark note

MBTI and Myers-Briggs are registered trademarks of the Myers & Briggs Foundation. 16Personalities is a product of NERIS Analytics Limited. medtests.de is not affiliated with either. This test is not a reproduction of those instruments; it is based on the freely available IPIP items (Mini-IPIP).

Source

Donnellan MB, Oswald FL, Baird BM, Lucas RE. The Mini-IPIP Scales: Tiny-yet-effective measures of the Big Five factors of personality. Psychological Assessment, 2006;18(2):192-203. Items from the International Personality Item Pool (public domain, ipip.ori.org). On the limits of type indicators: Pittenger 2005; McCrae & Costa 1989.

Frequently asked questions

Which personality type am I?

That is exactly what this test answers: from 20 statements it derives your tendency type as a four-letter code (for example ENFJ) with its own type name, plus your profile across the five Big Five dimensions behind it. You see the type and how clear or close each letter is for you.

Is this the official MBTI test?

No. MBTI and Myers-Briggs are registered trademarks of the Myers & Briggs Foundation, and the original questions are licensed. The 16Personalities questions from NERIS Analytics are protected too. This test uses the freely available IPIP items (Mini-IPIP) to measure the scientifically established Big Five, then translates your profile into the familiar four-letter type.

How credible are 16-type tests?

16-type tests are among the most popular personality tests in the world, but they have drawn criticism from researchers for years. First, they sort people into either-or boxes (E or I, T or F) even though the traits are actually continuous and many people sit near the middle. Second, retest reliability is weak: in studies, a substantial share of people get a different type a few weeks later (Pittenger 2005). Third, the type descriptions often feel accurate mainly because they are written generally enough to fit almost anyone, the Barnum effect. That is why this test measures the scientifically established Big Five, shows all the underlying scores, and presents the type as a tendency, not a fixed label.

What is the difference from the Big Five test?

The Big Five test uses 50 questions and gives you a full profile across five dimensions. This test uses the 20 Mini-IPIP questions and also derives the four-letter type from them. For the fuller and more stable picture, the Big Five test is the better choice.

Can my type change?

Yes. Especially with close scores near the middle, a slightly different day can flip a letter when you retake it. That is not a flaw in the test, it shows that personality is continuous and does not fit neatly into 16 boxes.

How long does the 16 types test take?

About 2 to 3 minutes. The test consists of 20 short statements and the result appears immediately afterwards. No sign-up and no email address needed, the test runs anonymously in your browser.

Which of the 16 types is the most common, which the rarest?

The types are distributed very unevenly. In large US samples, ISFJ and ESFJ are among the most common types, INFJ and ENTJ among the rarest (Schaubhut et al. 2009). A rare type is neither better nor worse, frequency says nothing about the value of a profile.

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Reviewed by our editorial team

Instrument, scientific basis, and limitations checked. Last updated July 2026. Independent, anonymous, not a diagnosis.

After the test

A personality type result is a signal, not a verdict. Note what stood out and use it as a starting point for a conversation with a medical or mental-health professional.

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