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Solved Converting time to military minutes

August 30, 2016 at 06:43:33
Specs: Macintosh
I need help with a formula to calculate standard time to military time. The minutes part of the equation needs to be from 60 to 100 minutes. For example Clock in time is 7:52:03 and it should be 7:86:05 (multiplying the minutes by 1.66). The clock out time is 15:12:11 and it should be 15:20:18. The standard subtraction equals 7:20:08 however, it should be 7:34:21.

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August 30, 2016 at 08:10:23
✔ Best Answer
re: "the minutes part of the equation needs to be from 60 to 100 minutes"

First, I have never known a "military hour" to have 100 minutes. It has 60 minutes just like any other hour, but is often expressed as a decimal portion of an hour. e.g. 15 minute = .25 of an hour.

I don't think I have ever seen military time expressed as 7:86:05. 7.86, Yes, but 7:86, No, at least not in my experience. I think that that format would be very confusing.

If I saw 15:25 (in 24 hour time format) or 1525 (in my experience with military time) I would say that it is 25 minutes after 3 PM, not 15 minutes after 3 PM. Any value that is less than 60 and used in the minutes or seconds portion of the value could be taken 2 different ways.

As far as the math part of your question, this might help.

In Excel, if you multiply a time by 24 and format the cell as a number, you will get the decimal equivalent, but it will not contain the colons. e.g.

7:52:02 * 24 = 7.8675
15:12:11 * 24 = 15.2030555555556

You can then do your math with the decimal values and get:


If you wanted to, I guess you could then convert that to a "colon delimited" string, but I wouldn't.

You might want to see if there is anything here that might help:

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August 30, 2016 at 08:22:21
DD is correct. This isn't really military time; it's just a converting 60 seconds into percentages of an hour. So, the correct calculation is dividing the minutes by 60, not multiplying by 1.66.

I have a an old chart which already has these conversions done, if you would like me to post it, I can.

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