Lunar Calendar Converter
Convert between Gregorian and Chinese lunar dates, with zodiac animal, sexagenary year, and nearby solar terms.
Lunar Calendar Converter
Convert between Gregorian and Chinese lunar dates, with zodiac animal, sexagenary year, and nearby solar terms.
About the lunar calendar converter
Lunar birthdays fall on a different date every year
The Chinese lunar calendar follows the phases of the moon, so the same lunar date lands on a different Gregorian date every year. This converter works in both directions instantly, which makes it handy for looking up lunar birthdays, traditional festivals, and memorial dates.
Built-in Gregorian-lunar conversion table for the coming years
Every conversion also shows a small Gregorian-lunar conversion table for the same lunar date over the coming years, so you can plan birthdays and festivals ahead. Leap months are fully supported: the month list shows a leap month only in years that actually have one, years without it fall back to the regular month, and day 30 falls back to the month's last day, all clearly labelled.
Zodiac, solar terms, and reliable data
Results also show the zodiac animal and sexagenary (gan-zhi) year, plus the nearest solar terms around the selected date. Lunar dates come from the international calendar data built into your browser (ICU/CLDR) and solar terms are computed from standard astronomical formulas, accurate to the day. Everything runs in your browser and nothing is uploaded.
FAQ
Common questions and answers about this topic.
Why does my lunar birthday fall on a different Gregorian date every year?
The lunar calendar is based on moon phases, with months of 29 or 30 days and occasional leap months, so a lunar year is about 11 days shorter than a Gregorian year. That is why the same lunar date drifts across the Gregorian calendar. Switch to "Lunar to Gregorian", pick the lunar date, and you will get this year's matching date instantly.
What is a leap month and how do I convert a leap-month birthday?
To keep lunar years aligned with the seasons, an extra "leap month" is inserted roughly every two to three years, repeating an existing month. When you convert from a lunar date, the month list automatically includes the leap month for years that have one, so you can pick it directly. In years without that leap month, the common convention is to use the regular month instead.
Which years are supported and how accurate is the data?
The converter covers 1900-2100. Lunar dates come from your browser's built-in international calendar data (ICU/CLDR, the same source used by operating systems), and solar terms are computed from standard astronomical formulas, accurate to the day.
Is the date I enter uploaded anywhere?
No. All conversions run entirely in your browser and nothing is sent to any server. The share link only encodes the selected date in the URL on your device, and it is copied only when you tap the copy button.