Birth Chart Compatibility Calculator
Two birthdays in, a real compatibility score out, computed from your actual Sun, Moon, Venus, and Mars positions, not just sun signs.
What your chart says about who fits you, your timing windows, and your love blocks. Free quiz, 60 seconds.
Start my free readingHow this birthday compatibility score works
Most compatibility tests compare sun signs and stop. This one computes four real placements per person from each birth date, Sun (identity), Moon (emotional needs), Venus (love style), and Mars (desire), then scores the pairings by element and modality. Moon-to-Moon carries the most weight, because emotional compatibility is what long-term relationships actually run on, and Venus-to-Mars carries the chemistry.
What the score can and cannot tell you
A high score means your default wirings cooperate. A lower one means the relationship asks for more translation, plenty of great couples live there. For the full method, read birth chart compatibility: the complete guide, or compare whole charts in the synastry calculator.