Almanac & sky · NUMORA

Synastry Chart Calculator

Inter-aspects between two charts.

How to use

Geometry only — no personality essay.

Formula

FAQ

Is this Synastry Chart calculator accurate?

The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.

Do I need an account?

No. Calculations run in your browser. Recents can stay on this device.

What inputs do I need?

Geometry only — no personality essay.

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