**Hfplus**We need to find the total number of hours and minutes between start time and end time. What would the calculation look like for this?

We are using the i0s7 Time widget:

Start time 9:30 AM and End time 2:30 PM total hours is: 4.00

*This is a re-post of a comment on Form Calculation - Math Function Reference*- JotForm Support
**BJoanna**You can achieve that with Time field.

When you add Time field to your form turn on Range option.

You also need to set to Yes Time Range Duration.

Here is my demo form: http://form.jotformpro.com/form/52725992778979?

Hope this will help. Let us know if you need further assistance.