Zodiac compatibility calculator
Explore planetary relationships between two charts. No love score, no destiny verdict—just cross-chart aspects and space for reflection.
Make a little cosmic discovery.
Choose your tool. Enter your details. Explore with context.
Astronomy Engine · apparent geocentric positions · whole-sign houses · 1900–2100. Sidereal results use an approximation. Interpretations are symbolic, not scientifically established predictions.
Calculator questions
Do I need my exact birth time?
For a rising sign and house placements, yes. The ascendant moves quickly and depends on location. An unknown-time chart uses noon only as a labeled reference and omits the ascendant and houses. Your Moon sign may also change during the day.
Why are Western and Vedic signs different?
Western tropical astrology begins at the March equinox. Sidereal astrology applies an ayanamsa offset. Astrojelly’s sidereal option uses a documented approximation; it is not a certified Lahiri or professional Kundli calculation.
Are these astrology predictions scientifically proven?
No. Astronomical positions can be calculated and tested. Astrological interpretations are symbolic traditions and are not scientifically established predictions of personality or future events.
How is calculation accuracy handled?
The tools use Astronomy Engine for astronomical positions. We show the zodiac, house system, timezone, and limitations. Birth-time uncertainty, coordinate errors, and sidereal conventions can affect results. We do not claim an untested 99.9% accuracy rate.
Do you save my birth details?
Calculations run in your browser. Broader place searches send only the country and place query to Astrojelly; birth dates, times and results stay in your browser. You can download results to your own device. Standard hosting access logs may still record page visits.
Explore birth chart compatibility beyond Sun signs
Two charts can start a lovely conversation. They cannot finish it for you. Comparing two charts, often called synastry, explores how placements relate within an astrological framework. Sun signs are only one part of that comparison. Use reliable birth details for both people and treat symbolic patterns as conversation prompts.
Try this: choose one listed aspect and ask each other an open question about it. Keep what helps you talk kindly; leave behind anything that tries to label a person as a problem.
Can astrology prove that two people are compatible?
No. A chart comparison cannot establish relationship success or replace communication, shared values and lived experience. Astrojelly avoids a scientific-looking love percentage or a fixed relationship verdict.
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