Work out chinese zodiac compatibility instantly with clear inputs, formula shown and shareable results.
The animal is the birth year modulo twelve offset from 1900 (a Rat year), and the score follows the classical trine, opposition and square rules based on positions apart in the cycle. For entertainment. The cycle arithmetic is exact, though it uses the Gregorian year rather than the lunar new year, so births in January or early February may fall in the previous animal year.
Animal
animal index = (birth year - 1900) mod 12, starting from Rat
Score rule
four apart 90, neutral 65, same animal 70, three apart 50, opposite 40
animal index = (birth year - 1900) mod 12, starting from Rat. The animal is the birth year modulo twelve offset from 1900 (a Rat year), and the score follows the classical trine, opposition and square rules based on positions apart in the cycle.
For entertainment. The cycle arithmetic is exact, though it uses the Gregorian year rather than the lunar new year, so births in January or early February may fall in the previous animal year.
Enter first birth year, second birth year. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.