The multiple to use for rounding is provided as thesignificanceargument.

If the number is already an exact multiple, no rounding occurs and the original number is returned.

The FLOOR function takes twoarguments,numberandsignificance.Numberis the numeric value to round down.

Excel formula: Group times into 3 hour buckets

Thesignificanceargument is the multiple to whichnumbershould be rounded.

See the example below.

FLOOR works like theMROUND function, but unlike MROUND, which rounds to thenearestmultiple, FLOORalways rounds down.

Excel formula: Round a number down to nearest multiple

Note: the FLOOR function is officially listed as acompatibility function, replaced byFLOOR.MATHandFLOOR.PRECISE.

MROUND will round a number up or down, depending on the nearest multiple.

CEILING Function

The Excel CEILING function rounds a given numberupto the nearest specified multiple.

Excel formula: Round to nearest 5

CEILING works like theMROUND function, but CEILINGalways rounds up.

ROUND Function

The Excel ROUND function returns a number rounded to a given number of digits.

The ROUND function can round to the right or left of the decimal point.

Excel formula: Round time to nearest 15 minutes

ROUNDDOWN Function

The Excel ROUNDDOWN function returns a number rounded down to a given number of places.

FLOOR works like the MROUND function, but FLOORalways rounds down.

Note that negative numbers becomemore negative.

Excel MROUND function

For example, while INT(10.8) returns 10, INT(-10.8) returns -11.

For example, TRUNC(4.9) will return 4, and TRUNC(-3.5) will return -3.

The TRUNC function does no rounding, it simply truncates as specified.

Excel CEILING function

Excel ROUND function

Excel ROUNDDOWN function

Excel ROUNDUP function

Excel FLOOR function

Excel INT function

Excel TRUNC function