Round to the Nearest Multiple Other Than 10

If you want to round a price to nearest nickel (multiple of 0.05), or a length to the nearest inch (multiple of 1/12), or a number of minutes to the nearest second (multiple of 1/60), you can use the following formula (where mult is the multiple to round to):

=ROUND(number/mult,0)*mult
or just
=MROUND(number,mult)

(Thanks to mmmoj's comment for the MROUND function)

If you want to round UP or DOWN, you can use ROUNDUP or ROUNDDOWN instead, or the CEILING or FLOOR functions:

=ROUNDUP(number/mult,0)*mult
=CEILING(number,mult)

=ROUNDDOWN(number/mult,0)*mult
=FLOOR(number,mult)

The ROUND, ROUNDUP, and ROUNDDOWN functions will round negative numbers as if you first multiplied the value by -1, did the rounding, and then multipled by -1 again. So -23.6 rounded UP would be -24. When using CEILING or FLOOR, the multiple needs to be the same sign as the number.

Round Price to Nearest Nickel

=ROUND(price/0.05,0)*0.05
=MROUND(price,0.05)

=CEILING(price,0.05)    (rounds up)

Round Minutes to the Nearest Second

=ROUND(minutes/(1/60),0)*(1/60)
=MROUND(minutes,(1/60))

Round Feet to the Nearest Inch

=ROUND(feet/(1/12),0)*(1/12)
=MROUND(feet,(1/12))

Round to the Nearest Even Number

=ROUND(number/2,0)*2
=EVEN(number)    (rounds up)

Round to the Nearest Integer

=ROUND(number,0)

=INT(number)    (rounds down)

Round to the Nearest 15-Minute Interval

=ROUND(minutes/15,0)*15

=CEILING(minutes,15)   (rounds up)