Big three calculator

What is your big three?

Your big three are your Sun, Moon and rising signs. The Sun describes your core identity and what you want to shine at. The Moon describes your emotional needs and inner world. The rising sign describes your outer style and first impression. Together they give a far richer picture than your sun sign alone.

The Sun only needs your birth date. The Moon is most accurate with a birth time, and the rising sign needs both your birth time and birth place, because it changes about every two hours.

Big three compatibility

Two people's big threes interact in many ways. A Sun that harmonizes with a partner's Moon is a classic sign of ease; a rising sign that matches a partner's Moon often feels instantly familiar. Read the birth chart compatibility guide for how these layers combine, or explore sun sign compatibility for all 78 pairings.

Go further

Add Venus and Mars with the Venus sign calculator, or compare both of your charts in a synastry chart to see every aspect between you.