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Synastry Chart Calculator With AI Interpretation

Create a synastry-style comparison from two birth charts.

Understand relationship dynamics through chart symbolism.

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

Venus-Mars and Moon-Mercury contacts are summarized as style differences and support points.

Safety note

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

FAQ

Is this deterministic?

No. Synastry is presented as reflection.

Are compatibility reports deterministic?

No. They are framed as reflective communication prompts.

Related ChartLumen tools

Sun in Aries

A direct, initiating solar style.

Moon in Cancer

Protective emotional style.

Venus in Libra

Balance-seeking love and values.