Full Version · OEJTS

Full MBTI Personality Test

Powered by the validated, open-source OEJTS scale — 60 items for a deep, authoritative read of your four-dimension preferences.

Results are for self-reflection and light discussion, not for hiring, diagnosis, or other high-stakes decisions.

Built on the OEJTS (Open Extended Jungian Type Scales) — a psychometrically validated open-source scale developed by Eric Jorgenson in 2014 and hosted by Open Source Psychometrics Project. 60 questions take roughly 10–15 minutes; part one contrasts descriptions and part two uses agreement ratings. Answer honestly — no sign-up needed.

Estimated 10-15 minutes 60 questions total

Short on time? Start with the quick version.

The quick version uses just 16 items and takes about 3 minutes — perfect for a fast first look. If you have time and want more precise dimension percentages, stay on this full test.

Quick MBTI Personality Test · 16 items · ~3 min · light overview
Go to the Quick Test

About the Full MBTI Test

This tool is built on the OEJTS (Open Extended Jungian Type Scales) — a psychometrically validated, open-source scale developed by Eric Jorgenson in 2014 and hosted by the Open Source Psychometrics Project (openpsychometrics.org). It is widely regarded as one of the most accurate and trustworthy free MBTI-style assessments available.

Scale Origin & Authority

  • Name: Open Extended Jungian Type Scales (OEJTS)
  • Author: Eric Jorgenson
  • First released: 2014
  • Host: Open Source Psychometrics Project (openpsychometrics.org)
  • Research: Independent studies report that OEJTS is the most accurate among comparable open MBTI-style scales, and validate its usefulness in self-awareness and team communication scenarios.
  • License: Released under an open license; available for research, education, and personal use.

Test Structure (OEJTS Scale)

The full version contains 60 items in two parts:

  • Part One (32 items): Each item presents two contrasting descriptions; choose where you fall on a 5-point scale.
  • Part Two (28 items): Each item is a first-person statement; rate your level of agreement.

Items map to the four core Jungian dimensions:

  • Extraversion (E) / Introversion (I): Energy source and attention direction
  • Sensing (S) / Intuition (N): Information gathering and perception style
  • Thinking (T) / Feeling (F): Decision-making and judgment style
  • Judging (J) / Perceiving (P): Lifestyle and external attitude

Why We Chose OEJTS

  • Independently psychometrically validated; results are stable and reliable
  • Outperforms most comparable free online MBTI-style scales in comparative studies
  • Iteratively refined wording to avoid cultural and phrasing bias
  • Open-source and auditable; the scale design is public and transparent

How to Use Your Result

Results are best for self-reflection, team communication, and light discussion. They are not intended for hiring, clinical diagnosis, or other high-stakes decisions. Personality type reflects preference tendencies — not ability or worth — and should always be read in context.

16 MBTI Personality Types at a Glance

Browse all 16 MBTI personality types. Use this as a quick reference while you take the test, or compare with your result afterwards.

ISTJ

The Inspector

Quiet, steady, and responsible. Values tradition and order. Detail-oriented and methodical, a dependable doer.

ISFJ

The Protector

Warm, caring, and diligent. Quietly attentive to others' needs. One of the most devoted types.

INFJ

The Advocate

Insightful and idealistic, pursuing deeper meaning. Quiet but with strong convictions and vision.

INTJ

The Architect

Independent strategic thinker with clear vision. Pursues efficiency and self-improvement.

ISTP

The Craftsperson

Flexible and pragmatic problem-solver who enjoys understanding how things work. Calm yet action-oriented.

ISFP

The Artist

Quiet, friendly, and sensitive. Lives in the moment with unique aesthetics and values.

INFP

The Mediator

Idealistic healer with rich inner world. Loyal to personal values, seeking authentic and meaningful life.

INTP

The Logician

Quiet, flexible thinker passionate about theories. Seeks perfect logical understanding.

ESTP

The Entrepreneur

Energetic doer who seizes opportunities. Pragmatic, direct, and adventure-loving.

ESFP

The Entertainer

Enthusiastic performer who enjoys every moment and energizes others. Generous and sharing.

ENFP

The Campaigner

Enthusiastic creative explorer who sees possibilities and inspires others. Imaginative and infectious.

ENTP

The Debater

Clever innovator who challenges conventional thinking. Analyzes problems from multiple angles.

ESTJ

The Executive

Pragmatic and decisive organizer. Excels at mobilizing people and resources to achieve goals.

ESFJ

The Consul

Warm-hearted coordinator who cares for others and maintains social harmony. Values tradition and relationships.

ENFJ

The Protagonist

Charismatic leader who develops others' potential. Passionate and purpose-driven.

ENTJ

The Commander

Bold and decisive leader who drives strategy and change. Pursues efficiency and excellence.

Frequently Asked Questions

How accurate are the results of this full MBTI test? +
This tool is built on the open-source OEJTS scale, which stands out among comparable free MBTI-style scales for its psychometric validation and accuracy. Please note that results reflect preference tendencies and are influenced by work environment, life stage, and emotional state — use it as a starting point for self-reflection, not as a final verdict.
What is the OEJTS scale? Why was it chosen? +
OEJTS (Open Extended Jungian Type Scales) was developed by Eric Jorgenson in 2014 and is hosted by the Open Source Psychometrics Project. It is open-source, independently validated by research, and widely regarded as one of the most accurate free online personality assessments in its class.
What's the difference between the full and quick versions? +
The quick version (16 items) uses 4 questions per dimension for a rapid estimate. The full version (60 items) uses 15 questions per dimension, producing more stable results and more precise dimension percentages — ideal if you want a deeper read of yourself.
How long does the test take? +
The full version takes about 10–15 minutes. We recommend completing it in one sitting in a quiet environment. Your answers are auto-saved so you can pause and resume.
Why are some dimensions close to 50/50? +
It means you are quite flexible on that axis and your style may shift with context. If even the 60-item version still shows balance, you naturally have strong situational adaptability.
Can this be used for hiring or psychological diagnosis? +
No. This tool is best suited for self-awareness, communication, and team building. For high-stakes decisions, please use professional psychological assessment.
Why does my result differ from a previous test? +
MBTI-style tests reflect preference tendencies and can shift with time, experience, and mood. We recommend waiting some time between tests and observing the trend rather than chasing a fixed label.