Lunar Calendar Converter
About this tool
Converts between solar and lunar dates using data based on the Korea Astronomy and Space Science Institute (the korean-lunar-calendar library). Lunar New Year 2026 (1/1) is 17 February and Chuseok (8/15) is 25 September.
When entering a lunar date, say whether it is a leap month: in 2023 there was a leap 2nd month, so lunar 2/1 is 20 February while leap 2/1 is 22 March. Non-existent dates are reported.
The sexagenary (ganji) year, month and day are shown too. The supported range is solar 13 Feb 1000 to 31 Dec 2050. Chinese lunar dates occasionally differ by a day because of the time zone.
FAQ
What is a leap month?
A lunar year is about 354 days, so a month is repeated every 2–3 years to stay in step with the seasons.
How do I find my lunar birthday this year?
Use Lunar → Solar with this year and your lunar birth date.
Can it differ from the Chinese calendar?
Yes. Korea (UTC+9) and China (UTC+8) occasionally start a month on different days.