Difference between times (Answer in minutes)

[Difference between times (Answer in minu]

The problem is following
Cell A1 time is 00:00 and Cell B1 time is 01:10
I want the result in minutes the answer is 70 min. how can I calculate it.
Please help me and guide me with formula.
My email address is (e-mail address removed)

ThankYou
Adil Farhan

 

[Mike H]

Try

=B1-A1

use a custom Format of [mm]

Mike