# XL FORMULA FOCUS: ROUND, ROUNDUP, ROUNDDOWN, MROUND (an introduction to Excel rounding functions)

Here is a quick introduction to four straight-forward rounding functions in Excel. We’ll look at each formula in the picture above and how they help you to round numbers.

ROUND(number, num_digits)

This is probably what you think of instinctively when you hear the word “rounding”, and so this might be the formula you use most often. In the example above we’re rounding to two decimal places, so if the third decimal place is 5 or above we round the second decimal place up, and if the third decimal place is below 5 we round the second decimal place down. If num_digits is 0 then it rounds to the nearest integer, and if num_digits is negative the number is rounded to the left of the decimal point.

ROUNDUP(number, num_digits)

You’ll start to see a theme emerging here – all of these rounding functions follow the same syntax (number, num-digits). So if you understand ROUND then ROUNDUP should be fairly intuitive for you. But just to spell it out, in the example above we’re rounding to two decimal places, so if the third decimal place is above 0 it rounds the second decimal place up, otherwise it stays the same.

ROUNDDOWN(number, num_digits)

Again the same format, only this time we’re rounding down. In the example above we’re rounding to two decimal places, so regardless of what the third decimal place is, we’re chopping it off and the second decimal place stays as it is.

MROUND(number, num_digits)