Round Down to the nearest multiple

[Xhawk57]

could anyone help me out with a formula similar to MROUND but that always
rounds down? for example I have in cell A1 5.99 and I want to round this to
the nearest LOWER 1/8th. So as where MROUND would give me 6.00, i need this
formula to round to 5.875.

any help is greatly appreciated!

 

[T. Valko]

Maybe this...

=FLOOR(A1,0.125)

 

[David Biddulph]

But with the warning that with Biff's formula you'll get a #NUM! error if A1
is negative.

=FLOOR(A1,0.125*SIGN(A1)) will work, if rounding "down" is regarded as
towards zero.
=IF(A1>0,FLOOR(A1,0.125),CEILING(A1,-0.125)) if "down" is towards minus
infinity.

 

[Ron Rosenfeld]

could anyone help me out with a formula similar to MROUND but that always
rounds down? for example I have in cell A1 5.99 and I want to round this to
the nearest LOWER 1/8th. So as where MROUND would give me 6.00, i need this
formula to round to 5.875.

any help is greatly appreciated!

If by "ROUNDDOWN" you mean round closer to zero, then:

=ROUNDDOWN(A1*8,0)/8

--ron