My original post had a bug (sorry), so I fixed it and reposted here.
I also posted this new formula as a reply a few threads down, but then
I thought that someone may not notice it, so I'm posting it higher up
on the thread to be seen easier.

ALSO, THIS FORMULA shows a tilde for any value that has to be rounded
to an approximation:


=IF(A1<0,"("," ") & IF(TRUNC(ROUND(ABS(A1)*16,0)/
16/12,0)<1,"",TRUNC(ROUND(ABS(A1)*16,0)/16/12,0) & "'" &
IF(MOD(ABS(A1),12)=0, ""," ")) & IF(TRUNC(ROUND(ABS(A1)*16,0)/
16-12*TRUNC(ROUND(ABS(A1)*16,0)/16/12,0))=1,
TRUNC(ROUND(ABS(A1)*16,0)/16-12*TRUNC(ROUND(ABS(A1)*16,0)/16/12,0)) &
IF(MOD(ABS(A1),1)=0,"","-"),"") & IF(MOD(A1,1)=0,"", ROUND(MOD(ABS(A1),
1)*16,0)/GCD(ROUND(MOD(ABS(A1),1)*16,0),16) & "/" & 16/
GCD(ROUND(ABS(A1)*16,0),16)) & IF(MOD(ABS(A1),12)=0,"","""") &
IF(A1<0,")"," ") & IF(ROUND(MOD(ABS(A1),1)*16,0) = MOD(ABS(A1),1)*16,"
","~")


Paste the formula into B2 of Excel, and then enter any number in
inches into cell A1.