Hello Samantha,

There's two functions that can do this - DateDiff() and DateSubtract().

DateDiff() returns a Numeric value and can calculate the date difference in years, months, weeks or days:

Example: DateDiff(Now(), $ThisIsYourDateField, 'd') 

DateSubtract() returns a Duration value and can calculate the date difference in working days or non-working days:

Example: DateSubtract(Now(), $ThisIsYourDateField, TRUE)

I hope this helps,

Roland