20+ calendars, not just the usual two
Gregorian, Julian, Hebrew, Islamic (tabular and Umm al-Qura), Chinese, Persian, Maya with Long Count, Ethiopian, French Republican, Discordian, Nepali, and more.
Why Almaniac
The calendar converter for people who want more than A↔B
Most calendar apps make you pick two systems and convert back and forth. Almaniac shows the same date across every calendar you care about in a single scrollable list — civil, religious, historical, and astronomical calendars side by side.
Features
Built for depth, not just conversion
Native scripts, done right
Arabic, Hebrew, Chinese, Japanese, Devanagari, Bengali, Persian, and more render with proper typography. Turn on transliteration to read dates in English.
Learn each calendar in depth
Tap any row for history, how the system works, calendar type, and world adoption maps. Illustrated banners — not just a number in a text field.
Widgets, holidays, and customization
Home screen widgets for at-a-glance dates. Religious holiday indicators. Reorder, show, hide, and theme your dashboard.
Calendars
Supported calendar systems
Including calendars most converter apps don't bother with.
- Gregorian & Julian
- Hebrew (Jewish)
- Islamic — tabular & Umm al-Qura
- Chinese lunisolar
- Japanese Wareki & Minguo
- Persian (Solar Hijri)
- Ethiopian & Coptic
- Thai Buddhist & Bengali
- Indian Civil & Nepali (Bikram Sambat)
- Baháʼí & ISO Week Date
- Maya with Long Count
- French Republican & Soviet Revolutionary
- Discordian & Julian Day
FAQ
Frequently asked questions
- What calendars does Almaniac support?
- Almaniac supports 20+ calendar systems including Gregorian, Julian, Hebrew (Jewish), Islamic (Hijri) with tabular and Umm al-Qura modes, Chinese, Japanese Wareki, Minguo, Persian (Solar Hijri), Ethiopian, Coptic, Thai Buddhist, Bengali, Indian Civil, Baháʼí, ISO Week Date, Maya with Long Count, French Republican, Soviet Revolutionary, Discordian, Nepali (Bikram Sambat), and Julian Day.
- How is Almaniac different from other calendar converter apps?
- Most calendar converters only show two systems at a time. Almaniac displays the same date across every calendar you choose in one scrollable list. It also renders dates in native scripts, includes obscure calendars other apps skip, shows religious holidays, and offers home screen widgets.
- Does Almaniac work offline?
- Yes. Almaniac performs all calendar calculations on your device. No account is required and your preferences are stored locally.
- Is Almaniac free?
- Yes. Almaniac is free to download on iOS and Android. Optional in-app tips are available to support development.
- Does Almaniac show Islamic dates accurately?
- Almaniac supports both tabular arithmetic Hijri dates and the Umm al-Qura (Saudi official) calendar, plus a ±1 day adjustment for local moon-sighting practice — closer to how people actually use Islamic dates than simple converters.