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Templum Dianae > Free Horoscopes > Free Synastry Chart Calculator

Free Synastry Chart Calculator

Compare two birth charts with a free synastry chart calculator. Explore planetary aspects and astrological relationship compatibility.

Synastry Chart

Enter both birth details to compare two natal charts. Select each city from the suggestions.

Person A
Person B
⚙ Extended settings

Additional calculation options will be added here.

How to Use the Free Synastry Chart Calculator

Discover your astrological relationship compatibility by comparing two birth charts. Synastry examines the planetary connections between two people to explore relationship dynamics, attraction, communication, and potential challenges.

How to Calculate Your Synastry Chart

  1. First Person: Enter their birth date, exact birth time, and birthplace.
  2. Second Person: Enter the same birth information for the other person.
  3. Generate Your Synastry Chart: Submit both profiles to compare their planetary positions.
  4. Explore the Results: Examine planetary aspects and connections between the two natal charts.

Tip: Accurate birth times are especially important for comparing the Ascendant and astrological houses. If a birth time is unknown, some interpretations may be less reliable.

Understanding Birth Chart Compatibility

Synastry highlights connections between the Sun, Moon, Venus, Mars, and other planets. Harmonious and challenging aspects describe different patterns within a relationship, rather than determining its outcome.

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