# How to Use the MOD Function in Excel

Updated on April 11, 2011

The MOD function is a maths and trigonometry function in Excel. It returns the remainder after a number is divided by a divisor.

At first glance, the MOD function does not really look to have much use. Many people are not that impressed at first and wonder how it could be incorporated into their day to day work. If you are an avid user of Excel though, you are sure to come across a situation requiring the use of the MOD function.

Letâ€™s have a look at how to use the MOD function in Excel.

## The MOD Function in Excel

In the example below there is a requirement for a number of muffins. The muffins need to be boxed before they are distributed. There are three different sized boxes that can be used. The MOD function will help us find the best size box to use for each order to limit the number of left over muffins.

The syntax for the MOD function is;

=MOD(number, divisor)

Number: The number that you want to find the remainder for

Divisor: The number you want to divide the number by

In cell E2 the formula =MOD(\$D2, A2) was entered. This finds the remainder for the muffins using box A. The \$ sign is used before D2 to hold column D so that the formula can be copied to the other 26 cells and still work ok.

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