Free online tool

Astrology compatibility calculator

Enter both birth charts for a personalised reading on love, tension, communication, and what to do next. Not generic sun-sign fluff.

Your details

Enter both birth charts

Names, dates, and cities of birth. Optional birth time improves rising-sign accuracy.

Relationship lens

Birth details

Person A

NameDate of Birth

City of Birth

Birth Time (optional)

Birth details

Person B

NameDate of Birth

City of Birth

Birth Time (optional)

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More astrology compatibility guides

Prefer a quick sun-sign read first? Browse pair guides and celebrity charts, then come back for our free astrology compatibility calculator.

Zodiac compatibilityAll 78 sun-sign pairs with scores and relationship notes.Celebrity birth chartsBrowse 2,000+ celebrity natal profiles and pairings.Zodiac signsFamous people by sign — Aries through Pisces.FAQHow synastry works vs sun-sign matching, and what’s free.

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