The 16 Personality Types Test: MBTI Explained and a Free Alternative
What does the 16 types test really measure?
Jung's typology, popularized by the MBTI indicator, describes personality along 4 dichotomies. Each axis places the respondent between two poles: you're never 100% on one side, but you have a dominant preference. The combination of the 4 preferences forms a 4-letter code (e.g., INFP, ESTJ) corresponding to one of the 16 types. The point isn't the label but understanding your natural preferences: how you recharge, process information, decide, and organize yourself.
In the article that follows, I explore personality types. If you recognise yourself in this theme, I designed a 16 personality types test that helps you take stock of your personality profile. It comes with a guide to extend your reflection beyond the results. I also wrote a book on this subject, The Practical CBT Guide, if you would like to go further.
Take the test: 16 Personality Types Test → — Which of the 16 types matches your natural preferences? This free, MBTI-inspired test gives you your 4-letter profile in about 10 minutes.What the test measures
- Energy (E/I): drawing energy from the outer world (Extraversion) versus the inner world (Introversion).
- Information (S/N): favoring concrete facts and the present (Sensing) versus ideas and possibilities (Intuition).
- Decision (T/F): deciding mainly by logic and objectivity (Thinking) versus values and human impact (Feeling).
- Organization (J/P): preferring structure and closure (Judging) versus flexibility and openness (Perceiving).
- Readiness to Change: a fifth, separate dimension measuring how ready you currently feel to act on what the test shows you.
MBTI vs. 16 personalities: what's the difference?
The official MBTI, the 16Personalities service and this site's questionnaire are separate products. 16Personalities states that its framework reworks Big Five traits; sharing a four-letter format does not make these assessments equivalent. Read each tool's framework and limitations rather than assuming that one result is interchangeable with another.
Scientific reliability: what you should know
Research considers the 16-types typology a useful framework but one with moderate reliability: test-retest stability is imperfect (you can change type between two assessments) and the clear-cut categories simplify a continuous reality. For a more robust measure of personality, the Big Five model (OCEAN) is the scientific reference. The 16 types remain excellent as a support for dialogue, teamwork, and introspection.
Taking the test
Our 16 types test has 64 questions across the axes above, takes about 10 minutes, and delivers an immediate result by dimension. The detailed report (scores per axis, type description, strengths and blind spots, concrete tips) is available for €2.90. You can see a sample of the personalized report before you decide.
Take the test now
➡ The 16 Personality Types Test — 64 questions, about 10 min, detailed report €2.90 Anonymous test, no sign-up required. A self-knowledge tool that does not replace a professional consultation.In short: The 16 personality types test places your profile on 4 axes derived from Carl Jung's typology — energy (extraversion/introversion), information (sensing/intuition), decision (thinking/feeling), and structure (judging/perceiving) — whose combination yields one of the 16 types. A fifth axis, Readiness to Change, is scored separately and does not affect the typology itself. It's the same theoretical basis as the MBTI® (a registered trademark of The Myers-Briggs Company): our test is an independent, free assessment that does not use the MBTI brand. Its scientific reliability is moderate (low test-retest), so it mainly serves as a tool for self-knowledge and communication, not as a diagnosis. Expect 64 questions, about 10 minutes, an immediate result by dimension, and a detailed personalised report available after payment.
About the author
Gildas Garrec · CBT practitioner
Certified psychopractitioner in cognitive-behavioral therapy (CBT), author of 16 books on applied psychology and relationships. Over 1000 clinical articles published across Psychologie et Serenite.