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Random Numbers in a Range

by Allen Wyatt (last updated January 26, 2012)

Excel provides a power function that allows you to easily return a random integer number within a range. For instance, you can use the RANDBETWEEN function to return a random integer number between 50 and 99, or between –25 and 0. The syntax for the function is as follows:

=RANDBETWEEN(lower, upper)

All you need to do is provide the lower and upper values. If the first number you provide is actually higher than the second number, then RANDBETWEEN returns a #NUM! error.

For Excel 2007 users the RANDBETWEEN function is built into the program. If you are using an earlier version of Excel, RANDBETWEEN is a part of the Analysis Toolpak. If you get an error when you try to use the function, you can make sure the toolpak is loaded in this manner:

  1. Choose Add-Ins from the Tools menu. Excel displays the Add-Ins dialog box.
  2. Make sure the Analysis Toolpak check box is selected.
  3. Click on OK.

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (2812) applies to Microsoft Excel versions: 97 | 2000 | 2002 | 2003 | 2007

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Comments for this tip:

RLUCE    26 Jan 2012, 08:27
I CANNOT GET THIS TO WORK, EXCEL 2003
=RANDBETWEEN(lower, upper)
I have it entered as below.
=RANDBETWEEN(50, 99)

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