Yes it is. You will need to put them in a workbook, but you can save that as
an addin, and load the addin.

--

HTH

Bob Phillips
... looking out across Poole Harbour to the Purbecks
(remove nothere from the email address if mailing direct)

"Mike Blackburn" wrote in message
...
I have written formulas (ie: one to display fractions in simplist form), I
would like to get these in Xl's formula list without having to load the
entire workbook that it's in. Is it possible to create the functions as an
add in?