Are you copying the text from your worksheet to the post, or re-typing it?

Try this:

=MID(TRIM(A3),FIND(" to ",TRIM(A3))+4,10)-
MID(TRIM(A3),FIND(" to ",TRIM(A3))-10,10)


Glenn wrote:
When I copy your text directly from this post to cell A3 in a blank
worksheet and then copy my formula to any other cell, I get the number
result 6. Can you reproduce that result?


Steve wrote:
This in the cell
Analysis Period: 01/23/2010 to 01/29/2010 - Processing Days: 6
the subtraction would work, as that's really all I need, the days, but
this
=MID(A3,FIND(" to ",A3)+4,10)-MID(A3,FIND(" to ",A3)-10,10)
still produced a #value!
Also =isnumber(e19) produced a TRUE


Thanks for your patience.