Synastry

Compare two birth charts and see how your planets meet: attraction, emotions, communication, friction and what holds you together.

Your birth details

Enter the date, time and place of birth of both people.

Person 1
Person 2

What is synastry?

Synastry compares two birth charts. It shows how one person's planets sit against the other's: Sun and Moon contacts speak of understanding and emotional safety, Venus and Mars of attraction, Mercury of communication, and Saturn of what makes a bond last.

Which contacts matter most?

Tight aspects (within 1–2°) between personal planets work the strongest, and so do mutual contacts — the same two planets linked both ways. House overlays show in which areas of life each person is felt most.

What synastry does not tell

Synastry describes how a relationship may feel from the inside, not whether it will work. Every relationship has hard aspects — they are where a couple grows. People, their maturity and their choices decide the rest.