ChartLiving

Synastry Chart & Compatibility

Compare two saved birth charts. See cross-aspects, dual wheels, and relationship patterns—Swiss Ephemeris accuracy.

Open synastry workspace

Frequently asked questions

What is a synastry chart?

Synastry overlays two natal charts and measures aspects between Person A's planets and Person B's planets—highlighting attraction, friction, and growth themes.

Do I need birth times?

You can view planetary cross-aspects without exact times. House and Ascendant-based interpretations require at least one known birth time.

How many charts can I save?

ChartLiving lets you save up to 2 profiles—ideal for your chart plus a partner—for synastry analysis.

Need a chart first? Use the free natal calculator →