Chinese Lunar Age Calculator

What Is My Chinese Lunar Age?

Chinese lunar age is a traditional nominal age used in some cultural customs. Instead of counting only completed birthdays, the method starts at one and follows the lunar-year system. That can make the result one or two years higher than Western age in everyday use.

How to Calculate Your Chinese Lunar Age

LunarBabyStory converts your birth date and reference date from the Gregorian calendar to the Chinese lunar calendar, then uses their lunar years:

Chinese lunar age = reference lunar year - birth lunar year + 1.

This starts your age at one at birth and adds a year at each Chinese New Year, rather than on your birthday. Use the calculator above to handle the date conversion: simply adding one to your Western age does not always give the same result. To find your lunar age today, choose today's date as the reference date.

Chinese Lunar Age vs. Western Age

Western age is based on the anniversary of a Gregorian birth date. Traditional Chinese lunar age depends on the lunar birth year and the lunar year of the reference date. Because Chinese New Year moves each Gregorian year, the difference is not always the same for everyone.

Why the Gender Chart Uses Lunar Age

The traditional Chinese Gender Calendar was built around lunar calendar values. It pairs the mother's lunar age at conception with the lunar month of conception. Using Western age directly can place a person on the wrong chart row. Gender prediction with this chart is cultural folklore for entertainment, not a medical method for determining fetal sex.

Using Your Lunar Age With the Chinese Gender Chart

Once you have the mother's lunar age, the next chart value is the lunar month of conception. If you already know the conception date, use the Lunar Month at Conception Calculator to find the chart column, then compare both values on the Chinese Gender Chart.

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