Multi-Calendar.app
Convert dates across 5 calendars, compare country holidays, and plan time off.
Convert dates across 5 calendars, compare country holidays, and plan time off.
This page is designed to help you find out whether Multi-Calendar.app is good and if it is the right choice for you.
Multi-Calendar is a free toolkit for working with dates and holidays across countries and calendar systems.
Convert dates between Gregorian, Persian (Jalali), Hijri, Hebrew and Chinese calendars — side by side, with weekdays and any holidays on that day. Browse public holidays by country, compare two countries side by side, and plan leave so weekends and public holidays become longer breaks.
Built for travelers, expats, international teams, and anyone who lives between calendars. Available in multiple languages including English, Persian, Arabic, German, French and more.
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Multi-calendar conversion
Convert dates across Gregorian, Persian (Jalali), Hijri, Hebrew and Chinese
Side-by-side calendars
See several calendar systems together with weekdays
Country public holidays
Browse official holidays for multiple countries by year
Holiday comparison
Compare two countries’ holidays and calendars side by side
Leave / time-off planner
Stretch leave days around weekends and public holidays
ICS & PDF export
Download holidays and leave plans for your calendar apps
Multilingual
Available in English, Persian, Arabic, German, French and more
Free to use
No account required for core conversion and planning tools
Multi-Calendar combines multi-system date conversion (Gregorian, Persian, Hijri, Hebrew, Chinese) with country holiday lists, cross-country comparison, and a leave planner that turns public holidays and weekends into longer breaks — in one free toolkit, not five separate sites.
Specialist converters often do only Hijri↔Gregorian. Holiday sites list dates but don’t help you spend leave efficiently. Multi-Calendar does conversion, holidays, comparison, and time-off planning together, with multilingual and RTL support for people who live between countries and calendars.
Travelers, expats, immigrants, and international teams who need accurate dates across calendar systems and clear public-holiday context — plus anyone who wants to plan leave around long weekends and holidays.
It started from a practical pain: working and living across countries means holidays don’t line up, and Hijri, Persian, Hebrew and Gregorian dates rarely live in one place. Multi-Calendar was built as a free toolkit so people can convert dates, compare calendars, and plan time off without juggling multiple tools.
Laravel (PHP), modular architecture, MySQL, and modern web front-end tooling. Calendar math uses precise conversion algorithms; holiday data is structured by country and year.
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