This article describes the formula syntax and usage of the MOD function in Microsoft Excel.
Description
Returns the remainder after number is divided by divisor. The result has the same sign as divisor.
Syntax
MOD(number, divisor)
The MOD function syntax has the following arguments:

Number Required. The number for which you want to find the remainder.

Divisor Required. The number by which you want to divide number.
Remarks

If divisor is 0, MOD returns the #DIV/0! error value.

The MOD function can be expressed in terms of the INT function:
MOD(n, d) = n  d*INT(n/d)
Example
Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.
Formula 
Description 
Result 
=MOD(3, 2) 
Remainder of 3/2 
1 
=MOD(3, 2) 
Remainder of 3/2. The sign is the same as divisor 
1 
=MOD(3, 2) 
Remainder of 3/2. The sign is the same as divisor 
1 
=MOD(3, 2) 
Remainder of 3/2. The sign is the same as divisor 
1 