Gregorian to Baha'i Date Converter

Enter a date in the Gregorian calendar and the tool returns the equivalent date in the Baha'i calendar using the standard relationship between the two systems.

1. 1

   Step 1

   Enter the complete Gregorian date — day, month, and year.

2. 2

   Step 2

   We anchor each system's epoch, then convert day by day — Gregorian: epoch 1 CE; Baha'i: year 1 = 1844 CE (Naw-Rúz ≈ 21 March).

3. 3

   Step 3

   Read the exact Baha'i date: a year spanning 365–366 days, counted month by month.

• 1

  Gregorian and Baha'i dates do not map one-to-one — the two systems start from different epochs and count leap years differently, so enter the full Gregorian date and read the Baha'i equivalent instead of shifting the year by a fixed offset.

• 2

  Before a Gregorian–Baha'i date goes into a booking or a flight, re-enter it in a second tool as a cross-check — pages like Gregorian to Baha'i Date Converter apply fixed rules and cannot warn about a transposed input digit.

• 3

  Time zones can move a Gregorian–Baha'i date by a full day around midnight: today in one zone is still yesterday or tomorrow in another, so anchor the calculation to the zone your event actually follows before you enter anything.

• The Gregorian and Baha'i calendars differ in year length and leap pattern, so a fixed-day offset — 365, 354, any memorized constant — drifts the Baha'i date badly. Convert the complete date so both leap rules apply.

• Reversing the direction is a silent trap: converting from the Baha'i calendar back to the Gregorian calendar needs the inverse relation, and off-by-one errors cluster at month boundaries where the systems disagree. Verify the round trip returns your original date.