Convert date to a number

[Shama_Arige]

I have a date and a turnaround time. Need to calculate start date = date - turnaround time.
The problem is date is date format and turnaround time is a number like 28. Is there any way to convert a date to a number?

[Kamille_Parks]

DATEADD({date field}, -{turnaround time field}, 'days')

[Shama_Arige]

Getting an error unfortunately. is the way to convert the date to a number first?

[Kamille_Parks]

You don’t need to, unless I’ve misunderstood what you’re tying to do. DATEADD() is function that lets you generate a date based on a start date (in your case, an end date) and a number of days/weeks/months/etc.

What formula did you type in? Did you replace the words between the {brackets} with the actual names of your fields?

[Justin_Barrett]

Works here.