Astrology calculators
Free calculators that work out signs and scores on your own device. Nothing you enter leaves this page. The calculation runs in your browser.
Sign compatibility
Pick two signs and see the six facet scores, the overall score and the facts behind them.
Birth-date match
Compare the Sun, Moon, Venus and Mars signs of two people from their birth dates.
Moon sign
Find the sign the Moon was in when you were born, and whether you need a birth time to be sure.
Venus sign
Find the sign Venus was in when you were born.
Love chart lite
Your Sun, Moon, Venus and Mars signs on one page, from a birth date.
How the calculators work
Planet positions are computed in your browser with open-source astronomy code. Sign scores come from the formula published on how we score. There is no account, and no birth date, time or place is sent to us or to anyone else.
A birth date is enough to start. When a planet changed sign on that day, the calculator says so and shows both possible signs until you add a birth time and time zone.