Chinese Age Calculator

East Asian age reckoning starts everybody at one on the day they are born and adds a year at Chinese New Year, so the nominal age runs one or two years ahead of the international one. Enter a date of birth and the day you want the age for and this returns the nominal age in sui, the exact international age beside it, and the lunar year each date falls in. It also gives the Korean counting age, which works the same way but turns over on 1 January. Chinese New Year moves between 21 January and 21 February, which is why a January birth date changes the answer, so the boundary comes from a table of the real dates for 1900 to 2050 and dates outside that range are refused.