Free Excel Holocene Era
Conversion Calculator

The calendar most commonly used today places year 1 AD at a point in time during the Roman Empire. That system labels earlier human accomplishment "before" or assigns negative numbers. 

Emiliani's HE calendar places year 1 HE much earlier, when humans were settling into agricultural communities (loosely matching the beginning of the geological Holocene Epoch).  Calling any point in time "year 1" is somewhat arbitrary. EMILIANI set 1 HE exactly 10,000 years before 1 AD. 

With this calculator, you can convert between the BCE/CE or BC/AD and BHE/HE systems. 

On the Excel below, the yellow box is where you enter a year. Your result is the line below that yellow box.

Double Click (or double tap) a yellow cell to enter a year.

00001 facebook holocene means entirely recent with emiliani photo
00001 facebook holocene means entirely recent with emiliani photo

04323 HE use our conversion calculator
04323 HE use our conversion calculator

12021 then to now and into the future
12021 then to now and into the future

00001 facebook holocene means entirely recent with emiliani photo
00001 facebook holocene means entirely recent with emiliani photo

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Also... HE conversion extension for your browser:

9 Jan Cavel screenshot and link.jpg