How to get the difference in minutes between two dates in Microsoft Excel?

问题

I am doing some work in Excel and am running into a bit of a problem. The instruments I am working with save the date and the time of the measurements and I can read this data into Excel with the following format:

   A           B
1 Date:      Time:
2 12/11/12   2:36:25
3 12/12/12   1:46:14

What I am looking to do is find the difference in the two date/time stamps in mins so that I can create a decay curve from the data. So In Excel, I am looking to Make this (if the number of mins in this example is wrong I just calculated it by hand quickly):

   A           B                 C
1 Date:      Time:       Time Elapsed (Minutes)
2 12/11/12   2:36:25               -
3 12/12/12   1:46:14            1436.82

I Have looked around for a bit and found several methods for the difference in time but they always assume that the dates are the same. I exaggerated the time between my measurements some but that roll over of days is what is causing me grief. Any suggestions or hints as to how to go about this would be great. Even If I could find the difference between the date and times in hrs or days in a decimal format, I could just multiple by a constant to get my answer. Please note, I do have experience with programming and Excel but please explain in details. I sometimes get lost in steps.

回答1:

time and date are both stored as numerical, decimal values (floating point actually). Dates are the whole numbers and time is the decimal part (1/24 = 1 hour, 1/24*1/60 is one minute etc...)

Date-time difference is calculated as:

date2-date1

time2-time1

which will give you the answer in days, now multiply by 24 (hours in day) and then by 60 (minutes in hour) and you are there:

time elapsed = ((date2-date1) + (time2-time1)) * 24 * 60

or

C3 = ((A3-A2)+(B3-B2))*24*60

回答2:

To add a bit more perspective, Excel stores date and times as serial numbers.

Here is a Reference material to read up.

I would suggest you to use the following:

Combine date to it's time and then do the difference. So it will not cause you any issues of next day or anything.

Please refer to the image with calculations. You may leave your total minutes cell as general or number format.

• MS EXCEL Article: Calculate the difference between two times

• Example as per this article

回答3:

Neat way to do this is:

=MOD(end-start,1)*24

where start and end are formatted as "09:00" and "17:00"

Midnight shift
If start and end time are on the same day the MOD function does not affect anything. If the end time crosses midnight, and the end is earlier then start (say you start 23PM and finish 1AM, so result is 2 hours), the MOD function flips the sign of the difference.

Note that this formula calculates the difference between two times (actually two dates) as decimal value. If you want to see the result as time, display the result as time (ctrl+shift+2).

https://exceljet.net/formula/time-difference-in-hours-as-decimal-value

回答4:

1. get n day between two dates, by using days360 function =days360(dateA,dateB)
2. find minute with this formula using timeA as reference =(timeB-$timeA+n*"24:00")*1440
3. voila you get minutes between two time and dates

回答5:

I think =TEXT(<cellA> - <cellB>; "[h]:mm:ss") is a more concise answer. This way, you can have your column as a datetime.

来源：https://stackoverflow.com/questions/13815538/how-to-get-the-difference-in-minutes-between-two-dates-in-microsoft-excel