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如何在Excel中午夜之後的時間之間計算小時?

doc計算過去一夜的時間1

假設您有一個時間表來記錄您的工作時間,則A列中的時間是今天的開始時間,B列中的時間是第二天的結束時間。 通常,如果您直接減去“ = B2-A2”來計算兩次之間的時間差,則不會顯示正確的結果,如左圖所示。 如何在Excel中正確計算午夜後兩次之間的小時數?

使用公式計算午夜後兩次之間的小時數


箭頭藍色右氣泡 使用公式計算午夜後兩次之間的小時數

要在午夜兩次之間獲得正確的計算結果,您可以應用以下公式:

1。 輸入以下公式: =(B2-A2+(B2<A2))*24 (A2 是較早的時間, B2 是以後的時間,您可以根據需要將它們更改為時間數據旁邊的空白單元格,請參見屏幕截圖:

doc計算過去一夜的時間2

2. 然後將填充柄拖到要填充此公式的單元格上,並立即計算午夜後兩次之間的時間差,見截圖:

doc計算過去一夜的時間3

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Comments (23)
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This comment was minimized by the moderator on the site
Hi All,

So I have a list of employees, all their working dates with start and end time & date.

I need to figure out how many hours were spent after midnight- night hours. The issue is that there are all sort of starting and finish times- some of the shifts were day shift the others started at 9pm till 2am, others started 10pm till next morning 5 am, etc.

Is there a way of calculating this using a generic formula for all lines?

I have tried so many variations but excel does not want to collaborate!
This comment was minimized by the moderator on the site
Hello, Timea,
In fact, the formula in this article can solve your problem, see below screenshot:
https://www.extendoffice.com/images/stories/comments/comment-skyyang/2023-comment/doc-calculate-hours.png
Please have a try, thank you!
This comment was minimized by the moderator on the site
Thank you for your reply.

I only want to know the hours worked after midnight, so only the night hours.
Not total hours worked.
Hope this makes sense.
This comment was minimized by the moderator on the site
Hello, Timea
If you just need to get the hours worked after midnight, the below formula may help you:
=IF(DAYS(B2,A2)>0,(B2-A2+(B2<A2))*24,"")
Please try, hope it can help you!
This comment was minimized by the moderator on the site
Very clever, using the comparison (b2<a2) to return a boolean result so if it's after midnight it adds 1.  It took me a minute to understand what you did it was so elegant. 
This comment was minimized by the moderator on the site
Hello,
You are welcome. Glad it helps. Any questions, please feel free to contact us. Have a great day.
Sincerely,
Mandy
This comment was minimized by the moderator on the site
This doesn't work with all data. The solution I tried after trying the above was =IF(B22>C22,(C22-0)+(24-B22),C22-B22)
This comment was minimized by the moderator on the site
=IF(B22>C22,(C22-0)+(24-B22),C22-B22) is perfect but instead of ( , ) use ( ; )
thankyouverymuch
This comment was minimized by the moderator on the site
Doesn't work for me... Formula incorrect.
This comment was minimized by the moderator on the site
Great solution, very useful! Thanks :)
This comment was minimized by the moderator on the site
Hi, i need help please. I have data that auto loads daily at 5pm. The process is broken into 2 parts (ETL1 and ETL2). ETL1 starts at 5pm till 11pm and ETL2 starts at 11 till 4 am. at 7 am i run a script to check if everything ran. each row has a start and end date time. i would like to flag all data after 5pm yesterday as todays data. Currently when i filter on today, i only see the rows where the date is after 00:00
This comment was minimized by the moderator on the site
Can someone explain when the function of addition of the TRUE/FALSE values does so I can understand the formula please?
This comment was minimized by the moderator on the site
True = 1, False = 0
This comment was minimized by the moderator on the site
I think a simple MOD(B2-A2,1) should be enough?
This comment was minimized by the moderator on the site
This is undoubtedly the best and shortest solution.
This comment was minimized by the moderator on the site
Austin, the formula stated in the article above works well for me
This comment was minimized by the moderator on the site
The formula under bullet point #1 is wrong. =(B2-A2+(B2<A2))*24, but is should read as =B2-A2+(B2<A2)*24.

The parentheses are in the wrong spot.
This comment was minimized by the moderator on the site
THANK YOU! This is definitely the correct formula.
This comment was minimized by the moderator on the site
Yes Austin! Your formula works, the other formula renders nonsense (in my case). Thanks!!
This comment was minimized by the moderator on the site
No, Austin's correction works for me. The original with the parentheses where they are shown does not work. Maybe a diifferent version of Excel makes a difference? I am on MS Home and Office 2016
This comment was minimized by the moderator on the site
The original formula works better than your suggestion Austin.
I also used =(A2-B2+(A2<B2))*1440
This worked best to convert time into minutes.
This comment was minimized by the moderator on the site
Depois de colocar a formatação ao tentar somar a coluna total de horas o valor dá-me errado.

O campo é formatado [h]mm
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=(A2-B2+(A2)) sem utilizar a multiplicação por 24
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