Synastry Chart
Compare two birth charts and discover the cosmic chemistry between you. Synastry reveals how your planets dance with your partner's — where you harmonize and where you challenge each other to grow.
Person 1
Person 2
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What Is Synastry in Astrology?
Synastry is the art of comparing two birth charts to understand the dynamics between two people. Unlike a composite chart (which blends two charts into one), synastry examines how each person's planets aspect the other's — revealing the actual experience of the relationship from each person's perspective.
Professional astrologers have used synastry for centuries to understand romantic compatibility, business partnerships, family dynamics, and friendships. The technique works by overlaying one person's natal chart onto another's and analyzing the geometric angles (aspects) formed between their planets.
Key Aspects to Look For
Sun-Moon
The core compatibility indicator. Sun conjunct or trine Moon suggests natural understanding and emotional attunement between partners.
Venus-Mars
The chemistry indicator. Strong Venus-Mars aspects create magnetic romantic and sexual attraction that keeps the spark alive.
Moon-Moon
Emotional resonance. When Moons are in compatible signs, both partners feel emotionally safe and understood without effort.
Saturn contacts
The commitment factor. Saturn aspects to personal planets create staying power — they can feel restrictive but build lasting bonds.
Synastry vs Other Compatibility Methods
Sun sign compatibility (comparing zodiac signs) only scratches the surface. Synastry goes far deeper by examining all planetary interactions. A couple with "incompatible" Sun signs may have powerful Moon, Venus, or Jupiter connections that make the relationship thrive.
For the most complete picture, astrologers recommend combining synastry with a natal chart analysis for each person, plus checking current planetary transits that might be activating relationship themes. You can also explore zodiac sign compatibility as a starting point.
For self-discovery and reflection purposes only. This is not fortune-telling or prediction.