The Excel RAND function will generate a random number in Excel that is greater than or equal to 0 and less than 1.

The syntax for the RAND function is:
=RAND( )

To use the RAND( ) function (examples)

To generate a random number between 0 and 100, use =RAND() *100
To generate a random number and return only whole numbers use =INT(RAND()*100) Advertisement

To generate a random number between 100 and 200, use =RAND() *(200-100)+100

Note:
If you want to use RAND function to generate a random number but don't want the numbers to change every time the cell is calculated, you can enter =RAND() in the formula bar, and then press F9 key to change the formula to a random number.