Free Synastry Chart: Relationship Compatibility Calculator | Astrology Rising

Free Synastry Chart

Discover your relationship compatibility with a detailed synastry chart analysis. Compare two birth charts to understand love dynamics, attraction patterns, and relationship potential.

💕 Calculate Your Relationship Compatibility

Enter both birth details to generate a comprehensive synastry chart with detailed compatibility analysis.

Create Free Synastry Chart 🔮

What Is a Synastry Chart?

A synastry chart compares two individual birth charts to reveal the astrological dynamics between two people. By analyzing the aspects (angles) between planets in both charts, synastry reveals areas of harmony, tension, attraction, and growth potential in any relationship.

🌟 Synastry Analysis Includes:

  • Planet-to-planet aspects between charts
  • Emotional compatibility (Moon connections)
  • Communication patterns (Mercury aspects)
  • Love and attraction dynamics (Venus/Mars)
  • Long-term potential (Saturn/Jupiter aspects)
  • Karmic connections (Lunar Nodes)
  • Power dynamics (Pluto aspects)
  • Spiritual connection (Neptune influences)
  • Growth opportunities (challenging aspects)
  • Natural harmony points (flowing aspects)
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Synastry

Two separate charts compared

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Composite

Midpoint chart of the relationship

Davison

Chart for relationship's midpoint in time/space

Essential Synastry Aspects

☀️ Sun Aspects - Core Identity Connections

Harmonious Sun Aspects

  • Sun Trine/Sextile Sun: Natural understanding, similar life goals
  • Sun Conjunct Moon: Deep emotional connection, "soulmate" feeling
  • Sun Trine Venus: Mutual admiration, easy love expression
  • Sun Sextile Mars: Energizing, motivating connection

Challenging Sun Aspects

  • Sun Square Sun: Different approaches to life, ego clashes
  • Sun Opposite Sun: Complementary but potentially conflicting
  • Sun Square Saturn: One person may feel restricted
  • Sun Conjunct Pluto: Intense, transformative, potentially obsessive

🌙 Moon Aspects - Emotional Compatibility

Supportive Moon Aspects

  • Moon Trine Moon: Emotional understanding, similar needs
  • Moon Conjunct Venus: Nurturing love, emotional harmony
  • Moon Sextile Mercury: Easy emotional communication
  • Moon Trine Jupiter: Optimistic, growth-oriented emotional bond

Tense Moon Aspects

  • Moon Square Moon: Different emotional needs, misunderstandings
  • Moon Square Mars: Emotional volatility, quick reactions
  • Moon Opposite Saturn: Emotional restriction, criticism
  • Moon Square Pluto: Emotional intensity, power struggles

💕 Venus/Mars - Love & Passion

Romantic Attractions

  • Venus Conjunct Mars: Instant attraction, passion
  • Venus Trine Venus: Similar love styles, harmony
  • Mars Sextile Venus: Balanced masculine/feminine energy
  • Venus Conjunct Sun: Admiration, romantic love

Love Challenges

  • Venus Square Mars: Sexual tension, different desires
  • Venus Opposite Saturn: Love vs. duty conflicts
  • Mars Square Mars: Competing energies, arguments
  • Venus Square Pluto: Obsessive love, jealousy

🗣️ Mercury - Communication Patterns

Clear Communication

  • Mercury Trine Mercury: Similar thinking patterns, easy talks
  • Mercury Conjunct Sun: Mental stimulation, understanding
  • Mercury Sextile Venus: Sweet communication, compliments
  • Mercury Trine Jupiter: Inspiring conversations, learning

Communication Issues

  • Mercury Square Mercury: Misunderstandings, different viewpoints
  • Mercury Opposite Saturn: Critical communication, pessimism
  • Mercury Square Mars: Arguments, hasty words
  • Mercury Square Neptune: Confusion, miscommunication

Synastry Patterns & Relationship Types

💚 Soulmate Connections

  • Multiple harmonious Sun-Moon connections
  • Venus conjunct or trine personal planets
  • North Node connections (karmic destiny)
  • Jupiter aspects bringing growth and expansion
  • Multiple trine aspects creating natural flow

🔥 Passionate Attractions

  • Strong Mars-Venus connections
  • Pluto aspects creating intensity
  • 8th house overlays (sexual magnetism)
  • Mars conjunct personal planets
  • Scorpio emphasis in synastry

🤝 Friendship Bonds

  • Mercury connections for mental compatibility
  • Jupiter aspects for shared philosophy
  • Aquarius/11th house emphasis
  • Sun-Mercury or Moon-Mercury aspects
  • Supportive Saturn aspects for longevity

⚡ Karmic Relationships

  • South Node connections (past life bonds)
  • Saturn aspects creating lessons
  • Pluto transformational connections
  • Chiron aspects for healing
  • 12th house overlays (spiritual bonds)

House Overlays in Synastry

House overlays occur when planets from one person's chart fall into specific houses of their partner's chart. This shows which life areas are activated and emphasized in the relationship.

1st House Overlay

Identity activation, attraction, "you complete me" feeling

4th House Overlay

Home, family, emotional security, "feels like home"

5th House Overlay

Romance, creativity, fun, children, playful love

7th House Overlay

Partnership, marriage, commitment, "other half"

8th House Overlay

Intimacy, transformation, shared resources, sexual magnetism

12th House Overlay

Spiritual connection, hidden aspects, unconditional love

How to Read Your Synastry Chart

📊 Step-by-Step Synastry Analysis

  1. Overall Compatibility: Count harmonious vs. challenging aspects
  2. Core Connection: Analyze Sun-Moon connections first
  3. Love & Attraction: Examine Venus-Mars interaspects
  4. Communication: Look at Mercury connections and house overlays
  5. Long-term Potential: Check Saturn and Jupiter aspects
  6. Growth Areas: Understand challenging aspects as opportunities
  7. Karmic Bonds: Consider Nodes, Chiron, and Pluto connections

✅ Positive Indicators

  • Multiple trine and sextile aspects
  • Harmonious Sun-Moon connections
  • Venus-Mars attraction aspects
  • Jupiter bringing expansion and joy
  • Supportive Saturn for stability
  • 5th and 7th house activation

⚠️ Challenge Areas

  • Multiple square and opposition aspects
  • Harsh Saturn aspects (restriction)
  • Difficult Pluto connections (power struggles)
  • Mars squares creating conflict
  • Neptune squares causing confusion
  • 12th house complications

Remember: Challenging aspects aren't necessarily bad - they often indicate areas where the relationship can promote growth, healing, and transformation. The key is understanding these dynamics and working with them consciously.

💕 Free Synastry Reading

Generate a detailed synastry chart comparing two birth charts for relationship compatibility analysis.

Calculate Synastry

Requires birth data for both people

Quick Compatibility Check

High Compatibility Signs
Same element, complementary opposites, trine relationships
Growth Potential
Square aspects, different modalities, learning opportunities
Challenging Dynamics
Harsh aspects, incompatible elements, power struggles

Synastry Aspects Guide

Conjunction (0°) Intense blending
Trine (120°) Natural harmony
Sextile (60°) Supportive flow
Square (90°) Dynamic tension
Opposition (180°) Magnetic attraction

Famous Relationship Synastry

Johnny Cash & June Carter
Sun-Venus conjunction, Moon trine Moon
Paul Newman & Joanne Woodward
Multiple Venus connections, long-lasting
Barack & Michelle Obama
Moon-Venus harmony, mutual support