You could check the date in the formula. For example, with dates in B3,
D3 and F3:
=IF(AND(B3<D3,B3<F3),G3+H3,"Invalid date")
Natassja wrote:
I am wondering if I am able to validate a date is less than or greater than
two other dates prior to a calculation being preformed?
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Debra Dalgleish
Excel FAQ, Tips & Book List
http://www.contextures.com/tiptech.html