How to use
- In Solar → Lunar, pick a date to see its lunar date, whether it falls in a leap month, and the zodiac year.
- In Lunar → Solar, choose a lunar year, month and day to find the Gregorian date. Tick "Leap month" for leap months.
- The table shows when the same lunar date falls over the next 10 years — useful for lunar birthdays and memorial days.
Good to know
A lunar month follows the moon’s cycle of about 29.5 days, so a lunar year is about 11 days shorter than a solar year. A leap month is added roughly every three years to keep it in step with the seasons.
This converter uses the Korean lunar calendar, calculated for Korea Standard Time (UTC+9). The Chinese calendar uses UTC+8, so on rare occasions the two differ by a day. Holidays like Seollal (Lunar New Year) and Chuseok follow this calendar in Korea.
The zodiac year changes at Lunar New Year, not on January 1, so someone born in January may belong to the previous year’s animal.
FAQ
Why does a lunar birthday move every year?
Lunar and solar years have different lengths, so the same lunar date lands on a different Gregorian date each year.
Is this the same as the Chinese calendar?
Almost always. Because of the one-hour time zone difference, a new moon near midnight can make the Korean and Chinese month start one day apart.
What range of years is supported?
1900 to 2100.
Updated: