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Synastry Chart Calculator

Compare two birth charts with reflective AI interpretation.

For users searching relationship chart comparison.

This page remains outside the search index until its calculation, source, and editorial review is complete.

Get your chartTry compatibility
Time and place are used for the Ascendant and whole-sign houses.

No sign up required. Raw birth inputs are not persisted for session-only charts; a redacted, authorized server record of derived chart facts and this browser session keep the workspace functioning.

How it works

ChartLumen resolves birth place, timezone, and chart facts first. Optional generated wording receives a minimized allowlist of derived chart facts, not raw birth inputs.

Example output

The report highlights support points, tension patterns, and communication prompts.

Safety note

Interpretations stay reflective and do not provide medical, legal, financial, crisis, or certainty-based future advice.

FAQ

Does it say soulmate?

No. It avoids deterministic labels.

Can both people use unknown time?

Yes, with time-sensitive limitations.

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Protective emotional style.

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