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💕Free Online Calculator

Zodiac Compatibility Calculator

Check your zodiac compatibility free online. Enter both birth charts to discover your love match score, synastry aspects & relationship potential.

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Person 1

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Person 2

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For best results, use accurate birth times. If unknown, use 12:00 PM.

What is Synastry?

Synastry is the art of comparing two birth charts to understand relationship dynamics. By analyzing how your planets interact with your partner's, we reveal the cosmic blueprint of your connection.

  • Conjunctions: When planets align, creating powerful connections
  • Trines: Harmonious flow of energy between you
  • Squares: Tension that sparks growth and passion

Key Compatibility Factors

Our calculator analyzes the most important planetary connections for romantic compatibility:

  • ☉☽Sun-Moon: Core identity meets emotional needs
  • ♀♂Venus-Mars: Romantic and physical chemistry
  • Mercury: Communication and mental connection
  • ☽☽Moon-Moon: Emotional compatibility and understanding

Frequently Asked Questions

What if I don't know my exact birth time?

If you don't know your exact birth time, use 12:00 PM (noon) as an estimate. Sun, Moon, and planet signs will still be accurate, though house placements and Rising sign may vary.

What makes a good compatibility score?

Scores above 65% indicate strong natural compatibility. However, lower scores don't mean a relationship is doomed - challenging aspects often create the passion and growth that make relationships meaningful.

Can this predict relationship success?

Astrology reveals tendencies and energies, not fate. High compatibility makes certain dynamics easier, but all relationships require effort. Use these insights as a tool for understanding, not a deterministic prediction.