Lunar to Solar
Chinese lunar → Gregorian
About the lunar calendar
The Chinese lunar calendar follows the phases of the Moon and uses leap months to stay aligned with the solar year. This tool supports conversion for the years 1900-2049. To convert in reverse, use Solar to Lunar, or look up your zodiac animal withChinese Zodiac.
Lunar-to-Solar FAQ
Is the solar date of a lunar birthday the same every year?
No. A lunar year is about 354 days, roughly 11 days shorter than a solar year, and leap months (about once every 3 years) keep them aligned. So the solar date of a fixed lunar birthday drifts by 10-30 days each year. For example, the 15th day of the 1st lunar month fell on 24 February in 2024 but 12 February in 2025.
Why does the lunar calendar have leap months?
The lunar calendar follows moon phases, about 29.5 days per month, so 12 months total about 354 days — about 11 days short of the solar tropical year. Without the extra months, the first lunar month would drift into summer after about 17 years. Ancients set the rule of "7 leap months in 19 years", adding a 13th month in leap years to keep lunar years roughly aligned with the seasons.
How is a lunar date converted to a solar date?
This tool uses a lunar calendrical table method, matching big/small months and leap-month arrangement for the selected year against solar dates one by one. It supports the years 1900 to 2049, covering most use cases.
When would I need a lunar-to-solar conversion?
Three main scenarios: checking the solar dates of traditional festivals (Spring Festival, Mid-Autumn, etc.) for holiday planning; converting the lunar birthdays of elders or children to solar dates to set calendar reminders; and verifying the modern solar dates of lunar dates recorded in historical documents or family genealogies.