The IPIP-NEO Big Five test (OCEAN)
The IPIP-NEO measures the Big Five: five broad domains and the thirty finer facets underneath them. Free to take, grounded in decades of research, with percentile scores drawn from hundreds of thousands of real responses. Big Five, the five-factor model, OCEAN and IPIP-NEO are all names for the same map of personality.
Built on the public-domain IPIP-NEO inventories by John A. Johnson.
Both versions score the same five domains and thirty facets. The only difference is depth and time.
Ten questions behind every facet, for the most stable and detailed profile the item pool can give.
Choose this if you want the clearest read of all thirty facets and have the time to sit with it.
Take the full testFour questions per facet. The same map of your personality, drawn a little faster.
Choose this for a solid first look, or when you are short on time.
Take the short testNot sure? The short version is a great start. You can always take the full one later.
Most tests stop at five scores. The IPIP-NEO goes one level deeper and shows where you stand next to real people.
Your overall standing on Openness, Conscientiousness, Extraversion, Agreeableness and Neuroticism.
Each domain opens into six narrower traits, so two people with the same score can still look nothing alike.
Your scores are compared with people of your age and sex, using open datasets of hundreds of thousands of responses.
When you want more than numbers, an optional written report reads your whole profile back to you.
Psychology keeps returning to the same five broad traits, together called the Big Five, or OCEAN. Everyone sits somewhere on each one.
Curiosity, imagination and a pull toward new ideas, art and the unfamiliar.
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Planning, self-discipline and the drive to finish what you start.
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Energy drawn from people, warmth and a readiness to speak up and act.
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Trust, compassion and how much you weigh other people’s needs alongside your own.
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How strongly you feel stress, worry and emotional ups and downs.
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Six facets sit under each domain, thirty in all. That detail is where the test earns its keep.
Rate how well each statement describes you, from very inaccurate to very accurate. There are no trick questions and no right answers.
Get your five domains and thirty facets on a radar and in plain language, with your percentile on every trait.
Keep your free profile, or unlock a personal written report that turns the numbers into something you can actually use.
Optional personal report
The free result gives you the numbers. The personal report is a long, written reading of your whole profile: what your strongest traits do for you, what they quietly cost you, and where to put your attention next.
The report is available after you finish the test, as a one-time purchase. Your free profile stays free.
The questions come from the International Personality Item Pool, started by Lewis Goldberg at the Oregon Research Institute and free for anyone to use.
Percentiles are computed from open datasets that John A. Johnson published, with well over a hundred thousand responses behind each version.
This is a self-report questionnaire for self-knowledge, not a clinical or diagnostic tool. The IPIP-NEO is an independent, public-domain measure and is not the commercial NEO PI-R.
Yes. Taking either version and seeing your full profile costs nothing and needs no account. The only paid extra is the optional written report.
The short version is around 15 minutes and the full version around 40. You can pause and come back; your answers are saved in your browser as you go.
If you are new to this, start with the 120-question version. If you want the most detailed and stable read of your facets, take the 300-question one. Both measure the same traits.
It is a free, public-domain personality inventory that measures the Big Five and their thirty facets. John A. Johnson assembled it from the International Personality Item Pool and gathered the norms behind it.
The five-factor model is one of the most studied frameworks in personality psychology, with decades of research on its structure, stability and links to real-life outcomes. It describes tendencies, not a fixed type.
Your answers live in your browser while you take the test. Nothing is tied to your name unless you create an account to save your history, and your individual responses are never sold.
They are the same thing under different names. The Big Five (also written OCEAN, after openness, conscientiousness, extraversion, agreeableness and neuroticism) is the five-factor model of personality. IPIP-NEO is one free, public-domain way to measure it, so this is a Big Five test, an OCEAN test and a five-factor test all at once.
Pick a version and start. It is free, and you will see your full profile the moment you finish.