Calendar // Reservation form

I put two widgets of picking dates for a reservation form of car rental.

First widget as a "Start"

And second widget as "End"

Is it possible to make a condition where I can use these widgets to calculate the number of days, between the start date and the end date.

Thank you

You can use this widget http://widgets.jotform.com/widget/dates_difference then add a form calculation widget to get the number of days.

Here's a visual guide:

This applies the same for the Card Form.