♀ × ♂
Zodiac Compatibility Calculator
Pick any two signs to instantly see their compatibility score, strengths, and challenges — free, no signup. Then go deeper with your real birth charts.
Pick two signs to reveal their compatibility score.
Frequently asked questions
How is zodiac compatibility calculated?
This calculator scores a pairing from the harmony between the two signs’ elements (fire, earth, air, water), their modalities, whether they’re traditionally compatible or opposite signs, and more. It’s a fast Sun-sign reading — a great starting point before a full-chart synastry analysis.
Is Sun-sign compatibility accurate?
Sun-sign compatibility is a useful first look, but it’s only one layer. Real relationship astrology (synastry) compares both people’s complete birth charts — Moon, Venus, Mars, and the aspects between them — which is where the deeper dynamics live.
Which signs are most compatible?
Signs of the same element, or of complementary elements (fire + air, earth + water), tend to flow most easily. But "challenging" pairings often create the most growth — compatibility is about understanding the dynamic, not avoiding friction.
Is this calculator free?
Yes — checking any two signs is free and instant, no signup. A free Aurae account unlocks full synastry from your real birth charts and a personalized AI reading of your relationship.