# Random date between two dates

=RANDBETWEEN(date1,date2)

To generate random dates between two dates, you can use the RANDBETWEEN function, together with the DATE function.

In the example shown, the formula in B5 is:

=RANDBETWEEN(DATE(2016,1,1),DATE(2016,12,31))

This formula is then copied down from B5 to B11. The result is random dates between Jan 1, 2016 and Dec 31, 2016 (random dates in the year 2016).

### How this formula works

The RANDBETWEEN function takes two numbers, a bottom and top number, and generates a random integer in between. Dates in Excel are serial numbers, so you can use the DATE function to create the lower number and the upper number. RANDBETWEEN then generates a number that falls between these two date values.

Notes:

- The result of this formula must be formatted as a date in order to display correctly.
- That the RANDBETWEEN function will generate new numbers whenever a change is triggered on the worksheet. That includes any edits to the worksheet, also also simply opening the workbook.
- To prevent random numbers from being calculated again, copy the formulas, then use Paste Special > Values to replace the formulas with their calculated values.

### Random workdays

To generate random workdays, you can add the WORKDAY function like this:

=WORKDAY(RANDBETWEEN(date1,date2)-1,1)

The WORKDAY function ensures that the date returned is a working day, and not a weekend of (optionally) a holiday. Note however WORKDAY will shift dates that fall on weekends or holidays to the next working day, so you may see dates that extend beyond date2.

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