Baha'i to Julian Date Converter

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

1. 1

   Step 1

   Enter the complete Baha'i date — day, month, and year.

2. 2

   Step 2

   We apply both systems' rules: a Baha'i year runs about 365 days against the Julian 365 (≈0 days apart each year).

3. 3

   Step 3

   The result shows the correct Julian day, with Julian leap years applied date by date.

• 1

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

• 2

  Time zones can move a Baha'i–Julian 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.

• 3

  For deadlines tied to authorities or contracts, confirm which calendar the deadline officially uses before converting it here — a Baha'i–Julian date read in the wrong system can be off by days or even a full year.

• Anniversaries do not survive conversion unchanged: a Baha'i date maps to a fixed Julian date, but next year's Baha'i anniversary lands on a different Julian date. Reconvert each occurrence instead of adding one year to the last result.

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