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Excel ROUNDUP Function

Excel ROUNDUP function
Summary 

The Excel ROUNDUP function returns a number rounded up to a given number of decimal places. Unlike standard rounding, where numbers less than 5 are rounded down, ROUNDUP rounds all numbers up.

Purpose 
Round a number up to a given number of digits
Return value 
A rounded number.
Syntax 
=ROUNDUP (number, num_digits)
Arguments 
  • number - The number to round up.
  • num_digits - The number of digits to which number should be rounded up.
Usage notes 

The ROUNDUP function works like the ROUND function, except the ROUNDUP function will always round numbers up. The number of places to round to is controlled by the num_digits argument. Positive numbers round to the right of the decimal point, negative numbers round to the left, and zero rounds to the nearest 1. The table below summarizes this behavior:

Digits Behavior
>0 Round up to nearest .1, .01, .001, etc.
<0 Round up to nearest 10, 100, 1000, etc.
=0 Round up to nearest 1

Example #1 - round to right

To round up values to the right of the decimal point, use a positive number for digits:  

=ROUNDUP(A1,1) // Round up to 1 decimal place
=ROUNDUP(A1,2) // Round up to 2 decimal places
=ROUNDUP(A1,3) // Round up to 3 decimal places
=ROUNDUP(A1,4) // Round up to 4 decimal places

Example #2 - round to left

To round up values to the left of the decimal point, use zero or a negative number for digits:  

=ROUNDUP(A1,0) // Round up to nearest whole number
=ROUNDUP(A1,-1) // Round up to nearest 10
=ROUNDUP(A1,-2) // Round up to nearest 100
=ROUNDUP(A1,-3) // Round up to nearest 1000
=ROUNDUP(A1,-4) // Round up to nearest 10000

Example #3 - nesting

Other operations and functions can be nested inside ROUNDOWN. For example, to round the result of A1 divided by B1, you can use a formula like this:

=ROUNDUP(A1/B1,0) // round up result to nearest whole number

Rounding functions in Excel

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