Creating a gap function between 2 time stamps and changing that to minutes

Hi,

I am trying to convert a time data type into a gap time. Right now I have 2 time stamps that I can take the difference of to get another "time stamp". I need to convert this to decimal minutes, but I am having trouble using the LEFT and MID functions to do this, possibly because the data is a time type. Is there a way I can change a time data type that displays 00:30:56 to be 30.93? I tried

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But I am not getting the answer I need. If H3 was 00:30:56 in this formula I would get an outcome of 22.35 instead of 30.93. What am I doing wrong? Please help.

Your formula works if H3 is text but when it's a time the underlying value isn't 00:30:56 but the decimal equivalent, so your MID function doesn't work. Simpler just to multiply by 1440 (the number of minutes in a day), i.e. try

=H3*1440

....and format result cell as number