Zodiac Compatibility Calculator

A zodiac compatibility calculator compares two star signs and estimates how naturally they get along. This one looks at three things traditional astrology uses: the element of each sign, its modality, and the angle between the two signs on the zodiac wheel.

Pick your sign and theirs, choose whether you are looking at romance, friendship or work, and the calculator returns an overall percentage plus a breakdown across emotional connection, communication, passion and long-term potential, followed by a written reading of what the pairing feels like.

Yes. Every pairing is free to check, there is no sign-up, and you can run as many combinations as you like.

Zodiac compatibility is not scientifically proven and no percentage can predict a relationship. It is best used as a mirror for self-reflection rather than a verdict. Two people willing to be honest can make a difficult pairing work, and two people avoiding each other can waste an easy one.

Signs that share an element usually flow most easily, and so do the classic pairings of fire with air and earth with water. Signs sitting directly opposite each other often feel the strongest pull, because each has the quality the other quietly wants more of.

Yes. A low score means the relationship takes more deliberate effort, not that it cannot work. Plenty of long relationships are between signs with little in common, and what holds them together was built on purpose rather than found by luck.

Not for this calculator. It uses sun signs only, which you can work out from a birth date alone. Birth time matters for a full natal chart, including your rising and moon signs, but not for a sun-sign comparison.

Use the "I do not know my sign" link under either picker, enter the birth date, and the calculator works out the sign for you.