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How to add or sum times over 24 hours in Excel?

Normally, when adding or summing times in Excel, you will get the finally calculated result within 24 hours as the left screenshot shown. How about adding or summing times over 24 hours to display the real result? This article can help you.

Add or sum times over 24 hours by changing the format of result cell


Add or sum times over 24 hours by changing the format of result cell

You just need to change the format of result cell to achieve it. Please do as follows.

1. After summing the times, select and right click the result cell, then select Format Cells from the right-clicking menu. See screenshot:

2. In the Format Cells dialog box, go to the Number tab, select Custom in the Category box, then enter [HH]:MM or [HH]:MM:SS into the Type box, and finally click the OK button. See screenshot:

Now the result of summing times is displayed over 24 hours as below screenshot shown.

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Comments (15)
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This comment was minimized by the moderator on the site
Hi,

I have these 2 time stamps. the sum of working hours is over 24h.

11/1/2023 7:33:46
11/2/2023 8:55:07


To calculate total hours I use formula: WORKDAY(F1,H1)+MOD(H1-F1,-1) but then if it is over 24h it calculates as 1:21:21

Any help to fix this is appriciated :)
This comment was minimized by the moderator on the site
Can anyone please explain what ;@ added to a custom time format does to the format?
This comment was minimized by the moderator on the site
It works... Thanks
This comment was minimized by the moderator on the site
Kindly help me total up times for my Log Book. The monthly hours need to be added upto the totals. Monthly hours go upto a maximum of 90:00 hrs and Total is in the 10s of Thousands. Eg 14928:22.
Please help
This comment was minimized by the moderator on the site
Hi Philip Cherian,
The method in this post can also help to solve the problem you mentioned.
This comment was minimized by the moderator on the site
Danke für den Hinweis. :-)Thank you so much!
This comment was minimized by the moderator on the site
Hey there, I am a beginner Excel user. I am trying to understand the use of double quotation mark for duration of time in formulas. Double quotation converts the numbers to text, right? But I am able to use it and it says as numbers in this formula; let's say there is 20:00:00, and I want to substract this from 30 hours. My formula would be ="30:00:00"-A2 and it works perfect! So here double quotation doesn't convert it to text. However, when I use double quotation in an IF formula inside a calculated field in pivottable, it doesn't work. For example: =IF('Field 1'>="1:00:00",1,0) Could you please explain and help me understand why I can not use double quotation in the if formula but I can use it when I substract it? I have been trying to understand this for 3 days... Going crazy. Thanks al lot...
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hello my question is if i want to all time values in a specific cell and to restrict if time value is more than 24:00:00 then show dialog box error alert message etc Please any one help me...
This comment was minimized by the moderator on the site
Format to [h]:mm;@

It worked for me... took a while though!
This comment was minimized by the moderator on the site
What would you use if you had to sum these? I just need the total hours but am unable to find a solution. Ideas?



30039:12:56


26472:48:24


27641:05:20


28721:38:08


27766:17:52


24510:17:52


28532:04:48


31366:30:24


27428:28:56


31151:30:48


25722:07:28


24653:21:36
This comment was minimized by the moderator on the site
this is my problem to!
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Good day,
Sorry can't help you with that.
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Thank you!!
This comment was minimized by the moderator on the site
And it save my problem also. So easy when you know how! :-)
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