Let me clairify; I have a data sheet with cut lengths of multiple objects,
which I enter onto an Excel spreadsheet in a particular column.  I want the
next column to display fractions, rounded to the nearest even denominator,
the lowest of which is 32nds.  It would save me a lot of time to have Excel
convert for me, but I keep getting odd fractions (5ths, 31sts, etc...)

Rounding can be tricky.  There are many formulas to which will do this, and
a lot of them will appear to have the same end result.  Let me assure you
that each rouding-type formula is different, and will have different
outcomes in various circumstances.

That being said, it sounds like you would prefer a CEILING or FLOOR
function, as these will allow you to specify the fraction you wish to go
up/down to (e.g. nearest 1/4 or 1/2 or 1/32, etc).

As I see you have found a solution, I agree with Julie, share please.  :)
Give others the benefit of which you have received.  :)