Hi Craig -

The easiest approach would be a UI-Only field.  Unfortunately, there isn’t a datediff formula function but you can mimick that behavior using a combination of formula functions:

ABS(NOW() - {{CreatedDate}})/(1000246060)

1000 accounts for the fact that NOW() - {{CreatedDate}} will return the number of milliseconds between the two
* 24 accounts for number of hours in a day
* 60 accounts for number of minutes in an hour
* 60 accounts for number of seconds in a minute

You can also layer in CEIL/FLOOR/ROUND depending on if you want decimals or not.

Note that I do not believe this solution will handle daylight savings properly so you’ll want to test various scenarios to ensure it meets your requirements.

Thanks Barry. That’s pretty much what I figured. I didn’t know if there was a quick function way of doing it that I had overlooked.

Unfortunately no quick function  

Shameless plug warning: That said, it would be really easy to write one if the ability to register custom formulas existed.  If you think that is something that would be helpful, feel free to vote up the issue at https://community.skuid.com/t/add-support-for-registering-custom-formulas.