Gregorian ⇄ Chinese Lunar (Nongli) calendar — bi-directional, accurate 1900-2100.
- Runs locally
- Category Format Converter
- Best for Turning pasted content or local files into a handoff-friendly format.
What this tool does
Free online Chinese lunar calendar converter. Enter any Gregorian (solar) date between 1900-01-31 and 2100-12-31 and instantly get the matching lunar (农历 / nongli) date, including the stem-branch year name (干支 — 甲子, 乙丑, …), the zodiac animal (生肖 — Rat, Ox, Tiger, …), the 24-solar-term name if your date is a jieqi, and the traditional Chinese festival if it lands on one (Chinese New Year, Lantern Festival, Dragon Boat, Mid-Autumn, etc.). Reverse mode lets you pick a lunar year/month/day (with leap-month toggle) and get the Gregorian date back — useful for finding when your lunar birthday falls in any given year. All computation runs in your browser using the public Hong Kong Observatory / Purple Mountain Observatory ephemeris table; no network, no tracking.
Tool details
- Input
- Numbers
- The page exposes text boxes, numeric controls, file pickers, or structured inputs depending on the tool.
- Output
- Live result
- The result area focuses on usable output, with copy, download, or preview actions when supported.
- Privacy
- Browser-side processing
- The main tool logic does not call an external API, so inputs normally stay in the current tab.
- Save / share
- No account required
- Open the page and use it; whether results survive refresh depends on the tool.
- Performance budget
- Initial JS <= 25 KB
- No WASM budget is declared, keeping the tool quick to open on mobile.
- Best fit
- Format Converter · Content Creator
- Category and role tags drive related tools, internal links, and quick fit checks.
How to use
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1. Input
Paste or drop your content into the tool panel.
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2. Process
Click the button. All processing is local in your browser.
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3. Copy / Download
Copy the result or download to disk in one click.
How Lunar Calendar Converter (Chinese Nongli) fits into your work
Use it when the main problem is getting content from one practical format into another.
Conversion jobs
- Turning pasted content or local files into a handoff-friendly format.
- Previewing a conversion before you use it in a larger workflow.
- Cleaning small format mismatches without opening a full editor.
Conversion checks
- Try a small sample first when the source format is messy.
- Check character encoding, separators, and line endings after conversion.
- Keep the source until the converted output has been reviewed.
Good next steps
These links move the current task into a more complete workflow.
- 1 Traditional ⇄ Simplified Chinese Converter Traditional ⇄ Simplified Chinese — fast, character-level, no API. Open
- 2 Date Difference Calculator Days / weeks / months / years between two dates — plus business-days mode — browser-only Open
- 3 Unix Timestamp Converter Unix timestamp ⇄ human date — seconds / milliseconds / ISO 8601 — UTC and local — browser-only Open
Real-world use cases
Find when your lunar birthday falls this Gregorian year
Grandma was born on lunar 八月十五 (Mid-Autumn) but you only have a solar calendar on your phone. Switch to lunar-to-solar mode, pick year 2026, month 8, day 15, and the tool returns 2026-09-26 so you book the dinner on the right night instead of guessing within a two-week window every year.
Verify a contract or invoice dated by the Chinese calendar
A supplier in Guangzhou writes the ship date as 农历五月初五 (Dragon Boat). You need it in the Gregorian system for your ERP. Convert lunar 2026-5-5 to 2026-06-19 and log that exact day, avoiding the off-by-one errors that creep in when staff mentally map "fifth month" to May.
Settle which zodiac animal a baby actually is
A cousin born 2024-01-15 keeps being called a Dragon because it is a 2024 date. Enter it in solar-to-lunar mode: the result is lunar 癸卯年 腊月初五, a Rabbit, since Chinese New Year 2024 fell on Feb 10. The stem-branch year and 生肖 line settle the family argument in one screen.
Schedule a 7-day ancestor memorial (头七) correctly
Funeral customs count the 头七 and later rites on lunar days. If a passing was on lunar 三月初八, you need the matching Gregorian dates for the 7th, 21st, and 49th day so relatives flying in can book tickets. Convert each lunar day to its solar date and share one calendar that everyone can read.
Common pitfalls
Treating 闰四月 as "the fourth leap month" — it means the leap month that follows the 4th month. In a year with 闰四月 there are two 4th months; tick the leap toggle to pick the second one.
Assuming the zodiac flips on Jan 1. It changes at Chinese New Year, so 2024-01-15 is still a Rabbit, not a Dragon — check the stem-branch line, not the Gregorian year.
Entering a New-York birth instant without shifting to Beijing time. If you were born near midnight close to a month boundary, convert to UTC+8 first or the lunar day can be off by one.
Privacy
Every conversion runs in your browser against a bundled 1900-2100 ephemeris table. The date you enter is never sent to a server and is not logged. If you share a result link, the date you picked is encoded in the URL so the page can reopen on the same conversion — leave that link out if the date itself is private.
FAQ
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