Loading tool…
Conversion Tool
Effortlessly convert between Gregorian (solar) and lunar calendar dates, and explore the sexagenary cycle (60-year zodiac) and 12 zodiac animals. Perfect for finding traditional Korean festival dates like Lunar New Year and Chuseok.
The lunar calendar (陰曆) is based on the moon's phases and is used for traditional Korean festivals like Lunar New Year (설날) and Chuseok (추석). The solar (Gregorian) calendar is based on Earth's orbit around the sun and is the international standard. The same date has different notations in each system—this tool makes conversion between them simple.
The sexagenary cycle (干支, Gapja) combines 10 heavenly stems and 12 earthly branches, repeating every 60 years. For example, 2024 is '갑진년' (Wood Dragon), and 2023 is '계묘년' (Water Rabbit). The 12 zodiac animals represent the 12 earthly branches: Rat (자), Ox (축), Tiger (인), Rabbit (묘), Dragon (진), Snake (사), Horse (오), Goat (미), Monkey (신), Rooster (유), Dog (술), Pig (해). Used for age reckoning and fortune-telling in Korea, China, Japan, and beyond.
Enter a solar (Gregorian) date in the 'Solar' tab, and the tool shows the equivalent lunar date, sexagenary, and zodiac. Or enter a lunar date in the 'Lunar' tab to convert to solar. If the year has a leap month, toggle the 'Leap Month' checkbox for accurate conversion. Click 'Check Today' to instantly see the lunar date and sexagenary for the current date.
The lunar calendar is shorter than the solar year by about 11 days. To keep it aligned with the seasons, a 'leap month' (윤달) is inserted approximately 7 times every 19 years instead of a regular month. For example, 2023 had a leap second month (윤2월). The position of the leap month varies by year—use this tool to find it.
Enter the year in the Solar tab and try lunar month 1, day 1 for Lunar New Year (설날), and lunar month 8, day 15 for Chuseok (추석). The tool will convert them to solar dates. For example, Lunar New Year 2024 (음력 1월 1일) = February 10, 2024.
This converter supports dates from 1901 to 2050. Dates outside this range cannot be calculated.
Yes, the sexagenary cycle is calculated from a fixed formula: (year - 4) % 60, so it is precise. However, some traditions use the winter solstice (冬至) as the reference point, so different schools or practices may have slightly different conventions.
Recent conversions are stored only in your browser's local storage and are never sent to any server. If you clear your browser data, the history will be deleted.
Yes, the converter works perfectly on mobile browsers with no app installation needed.