Calendar Converter

Convert dates between 18 calendars worldwide — Gregorian, Persian, Hijri, Hebrew, Chinese, Japanese, Korean, Indian, and more.

100% Private — Nothing is Uploaded

All processing happens locally in your browser. Your files never leave your device and are never sent to any server.

From calendar

To calendar

Year

Month

Day

About the Calendar Converter

This tool converts dates between 18 major world calendars, including Gregorian, Persian (Jalali), Islamic (multiple variants), Hebrew, Chinese, Japanese, Korean (Dangi), Indian, Buddhist, Coptic, Ethiopic, and more.

Why convert between calendars?

International coordination — understand dates across cultures.
Historical research — convert dates from old documents.
Cultural events — align festivals like Chinese New Year, Nowruz, Ramadan, and Hanukkah.
Business and travel — coordinate with partners worldwide.

Everything runs locally in your browser — no data is sent to any server.