Composite Chart Calculator
A composite chart blends two birth charts into one — the chart of the relationship itself. Enter both birth details below.
Built with the midpoint method — each composite planet sits halfway between yours. Birth times add the composite Ascendant.
What a composite chart is
While synastry compares two people, a composite chart creates a brand-new, third chart that belongs to the relationship itself. It's made by taking the midpoint between each of your planets and theirs — your two Suns become one relationship Sun, your two Moons one relationship Moon, and so on. The result describes the bond as if it were its own living thing.
How to read it
The composite Sun shows the core purpose and identity of the relationship. The composite Moon is its emotional tone and what makes it feel safe. The composite Ascendant (when both birth times are known) is how the relationship appears to the outside world. Together they're the Big Three of your connection.
Go deeper
Explore what your relationship's placements mean in the Love Compatibility & Synastry collection, or see the aspects flowing between you with the synastry calculator.