Big Five Compatibility - Choose Your Language
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What this site offers
This is a free assessment site built on the Big Five model of personality — the five broad traits (extraversion, agreeableness, conscientiousness, openness, and neuroticism) that researchers most often use to describe how people differ from one another.
There are two ways to use it. The compatibility assessment is for two people: you rate five short personality items for each person (ideally each person rates themselves, but one person can fill in both sides), a few optional details such as the age gap can be added, and the result gives the pair a rank together with a reading of every trait, the strengths and the friction points to expect, and concrete suggestions for getting along. The personality assessment is for one person: answer the twenty questions of the public-domain Mini-IPIP scale and you get a profile of your own five traits, with a separate reading for each, which can then be carried straight into the compatibility assessment.
Around the assessments there are articles and a glossary. The articles cover conflict and repair, communication styles, closeness and distance, and the evidence behind popular beliefs about love and personality. The glossary explains the terms that appear in a result, so a reading can be followed without a background in psychology. Nothing here asks for an account, and there is no charge.
How the results are grounded
The readings are written from peer-reviewed research on personality and relationships together with public statistics, and the assessment method page lists the references behind them.
Please read a result as a description of tendencies across large groups of people, not as a verdict on one relationship. An unusual combination of traits can work very well, and a pair the model calls a good match still has to do the work of understanding each other. A low rank is best treated as a list of topics worth talking about, never as a reason to give up.
Privacy
Every assessment runs inside the browser. Taking one sends none of the answers to our servers. What is entered stays in the browser on the device in use, so it does not have to be typed again on a return visit, and the reset button on the form clears it at any time. Records kept in the Match Notebook behave the same way: they stay on the device and go nowhere else.
One point to keep in mind: if a share link is created for a result, the result itself is carried inside the address of that link, so the link deserves the same care as the result.
Languages
The site is published in four languages, and each one has a complete set of pages. Use the cards above to open a language, or start here in English: