Cross-Chart Synastry Engine
Birth Chart Compatibility Calculator
Compare two birth charts side-by-side. Evaluate energetic gravity, planet-to-planet inter-chart aspects, romantic chemistry, and karmic connections.
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Zodiac Sign Compatibility
Aries + Leo Compatibility
Explore how Aries and Leo interact in love, communication, and emotional harmony.
Astrological Canon
Astrological Synastry & Relationship Compatibility
Synastry is the art of comparing two birth charts to understand the chemistry, friction, and karmic evolution between two individuals.
1. What is Synastry?
In astrology, synastry overlays one person's birth chart directly onto another person's chart. This comparison reveals how your planetary energies interact. Synastry describes the psychological and spiritual dynamics that play out when two souls connect.
2. Critical Planets in Relationship Astrology
- The Sun & Moon: The Sun represents conscious identity, while the Moon represents the subconscious emotional sanctuary. Harmonious Sun-Moon connections are the gold standard for long-term emotional understanding.
- Venus: The planet of affection, values, and attraction. Venus alignments show romantic chemistry and shared taste.
- Mars: The planet of passion, physical desire, and friction style.