Synastry Compatibility Calculator
Frequently asked questions about Synastry Compatibility
What is synastry in this calculator?
Synastry is the Western name for comparing two birth charts to see how they fit together. This page uses Vedic tools - Lahiri sidereal Kundlis, whole-sign houses, and graha drishti (planetary aspects) - to see how your charts interact.
How is this different from Kundli Milan?
Kundli Milan scores the eight Ashtakoot gunas using each Moon for marriage matching. Synastry shows where each person lands in the other person's life. A high score can still have a tough Saturn overlay, while a lower score can still have warm house connections. Check both if you have exact birth times.
Do we need exact birth times?
Yes. House overlays are counted from each Lagna (rising sign), which changes every two hours. Without an exact birth time, key house overlays are just guesswork. If you only have birth dates, try Rashi compatibility or love and friendship compatibility instead.
Does a low score mean we should break up?
No. A lower score only shows areas like money, speech, or Saturn contacts that may need extra care and honesty. Real-life communication and respect matter far more than chart comparisons. Many loving couples share a mixed score.
Is this the same as Western Sun-sign love matching?
No. The Love Compatibility calculator only looks at tropical Sun signs and does not need a birth time. This page builds two full charts to read house overlays and graha drishti (planetary aspects). It gives a deeper look at how your two charts talk to each other.
How is this different from physical intimacy compatibility?
Physical intimacy compatibility checks Venus, Mars, the Moon, the 7th house, and the Navamsa chart for warmth and closeness. Synastry maps every planet in each other's houses for a wider view. Use intimacy compatibility to explore your personal bond, and this page to see how your daily lives fit together.
About Synastry Compatibility
Synastry means comparing two full birth charts to see how two people fit into each other's lives. This calculator uses two Lahiri sidereal Kundlis, placing each person's Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn into the other person's whole-sign houses. A planet in the partner's 7th house affects partnership, in the 5th it affects romance, and in the 10th it affects public life. It also reads graha drishti (planetary aspects) and shared signs - every graha aspects the 7th house, while Jupiter also aspects the 5th and 9th, Mars the 4th and 8th, and Saturn the 3rd and 10th.
The score (0-100) mainly checks house overlays, Moon elements and Graha Maitri (planetary friendship), Venus-Mars chemistry, planetary aspects, and Navamsa (D9) Venus with the 7th house rulers. It shows natural tendencies, not a promise to stay together or break up. A high score does not replace kindness, and a lower score does not mean a good bond must end.
This is not Kundli Milan (the 36-guna Ashtakoot system), Rashi compatibility, love and friendship compatibility using Nakshatra points, or Western Sun-sign love compatibility. For closeness between Venus, Mars, and the Moon, see physical intimacy compatibility. You can calculate each birth chart with Kundli Maker. Please use exact birth times and dropdown cities so each Lagna (rising sign) is accurate.
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