— do your stars align? —

Are your signs
a match?

Enter two birth dates to compare zodiac signs — the elemental chemistry of the Western signs and the harmony of the Chinese zodiac.

About the zodiac compatibility calculator

This zodiac compatibility calculator compares two birth dates and rates how well the signs get along — both the Western signs, through the chemistry of their elements (Fire, Earth, Air, Water), and the Chinese zodiac, through its compatibility trines. Enter two dates and get an instant, playful compatibility read.

It’s the quick way to answer “are our signs compatible?” for a couple, a friendship or a crush — with a short verdict for each tradition and an overall match score.

How is zodiac compatibility calculated?

For the Western signs it uses the compatibility of their elements (Fire, Earth, Air and Water); for the Chinese signs it uses the traditional trines and the clashing “opposite” animals. The two are combined into an overall match score.

Which signs are most compatible?

In Western astrology, signs of the same element — or the Fire–Air and Earth–Water pairs — tend to match best. In the Chinese zodiac, animals four years apart form a harmonious trine.

Is the compatibility calculator free?

Yes — it’s completely free, needs no sign-up, and everything is computed privately in your browser. It’s meant for fun, not fortune-telling.