Birth Chart Compatibility Calculator
Compare two birth charts with synastry-style patterns and reflective compatibility interpretation.
A calculator-first page for relationship astrology searches that need more than Sun sign matching.
This page remains outside the search index until its calculation, source, and editorial review is complete.
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
Element balance, Moon contacts, and inter-chart patterns become practical reflection questions.
Safety note
Interpretations stay reflective and do not provide medical, legal, financial, crisis, or certainty-based future advice.
FAQ
Is compatibility prescriptive?
No. It does not tell users what decisions to make.
Can reports be shared?
Share pages can hide names and exact birth data.