Tools
What Does a Synastry Chart Calculator Show?
Enter both birth charts
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Birth time and accuracy
For each person, provide a birth date, birth time, and birthplace. The date identifies planetary positions, while the time and place help establish the local chart accurately and calculate time-sensitive placements and chart angles. If a birth time is uncertain, use the most reliable information available and treat results involving precise timing with appropriate caution. Small changes in birth time can affect some chart details, especially near sign or house boundaries.
Which zodiac system is used
This tool uses the tropical Western zodiac, not sidereal or Vedic astrology. It calculates a comparison of two natal charts, so it describes the underlying relationship dynamic shown by the birth data rather than current planetary movement. It is not a transit, progressed, composite, or solar return calculator. Synastry can highlight ease, attraction, tension, communication patterns, and areas that may require conscious effort, but it cannot determine whether a relationship will succeed or assign a fixed label such as “twin flame.”
When information is missing
To get the most context from your results, first understand each person’s individual chart, then consider how the two charts connect. You can use Leymora’s Full birth chart calculator for a broader natal overview or browse all calculators for other astrology tools. Read aspects as patterns of interaction: their meaning depends on the planets involved, the aspect, the signs, the strength of the contact, and the people’s choices in real life.
Frequently asked questions
What does a synastry chart calculator calculate?
A synastry chart calculator compares two natal birth charts and identifies the relationship patterns created by their planetary placements. Leymora summarizes those interactions across Heart, Mind, Drive, Fortune, Stability, and Imagination rather than reducing compatibility to one score.
How do I use a synastry chart calculator with two people’s birth details?
Enter the birth date, time, and place for both people, then generate the comparison. Accurate times and locations help calculate each natal chart precisely, while the dates establish the planetary positions used to interpret the connection.
Do both people need exact birth times for synastry?
Exact birth times are recommended for the most precise synastry results, but the date and place remain important starting points. Uncertain times can make time-sensitive placements and angles less reliable, so interpret those parts cautiously.
Is Leymora’s synastry chart calculator free?
Leymora’s synastry chart calculator is free to use for comparing two birth charts. Enter both people’s birth information to explore the six connection categories and receive a focused relationship-astrology reading.
Which zodiac system does this synastry calculator use, and how accurate is it?
This calculator uses the tropical Western zodiac and calculates natal placements from the birth information entered. Results are only as accurate as the dates, times, and places supplied, and astrology describes symbolic patterns rather than scientifically proven relationship outcomes.
