Big Five Compatibility Test - Personality & Statistics

What this test tells you

What is measured

Both of you rate the same five short items, and those ratings are read as the five personality traits psychologists call the Big Five: extraversion, agreeableness, conscientiousness, openness and neuroticism. Those five traits are the scientific core of the analysis. The name is for display only; gender, birth year, blood type and star sign are optional. Birth year feeds the statistical look at age gaps, blood type and star sign are cultural reference items, and the test still works with every one of them left blank. Nothing you type is sent to a server — the whole analysis runs inside your browser.

What the result looks like

When you submit the form, the page shows an overall rank for the two of you, on a scale that runs from SSS down to G, with a one-line summary. Below it you get a chart with both profiles drawn over each other and a score for every trait, so you can see at a glance where you resemble each other and where you differ. Four readings follow: a trait-by-trait analysis, advice for building the relationship, a communication guide, and the strengths and challenges of this particular pairing. Everything appears on this same page. You can also create a share link; it opens a summary of the rank and trait differences, while the full readings stay on the device where you took the test.

Basis and limits

The analysis draws on peer-reviewed psychological research and public statistics, which describe tendencies across groups of people rather than predictions about one couple. A high rank is not a promise that a relationship will work, and a low one does not mean it cannot. Treat the result as a starting point for looking at your relationship together. See our methodology for the reasoning behind the result, take the personality test if you want to measure just yourself, and browse the articles and glossary for background on personality and relationships.