Birth-date match calculator

How the match is calculated

The calculator finds the sign of the Sun, the Moon, Venus and Mars for each person. Then it compares like with like: your Sun sign with their Sun sign, your Moon sign with theirs, and so on. Each comparison gets the same sign-pair score that the rest of the site uses, from the formula on how we score. The figure in the ring is the plain average of the 4 scores.

What it leaves out

It compares signs, not exact angles between the two charts, and it does not use rising signs or houses, which need the exact time and place of birth. It also does not cross-compare planets, such as one person’s Venus with the other’s Mars. It is a first look that goes further than Sun signs alone, and it should be read that way.

When a sign is marked with a question mark

A planet that changed sign during the span a birth could fall in is marked “?”. The score for that row uses the sign the planet was in at the middle of that span, so it may be off. The Moon is the usual case, because it changes sign about every two and a half days. Adding a birth time and the time zone of the birthplace settles it.

Sharing a result

“Copy link” makes a link that carries the dates in the part of the address after the “#” sign. Browsers do not send that part to a website, so the dates stay on your device and on the device of whoever opens the link. Share it only with people you would tell those dates.

The score describes signs. It is not a prediction about two people and not a reason to start, stay in or leave a relationship.