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

Author Siluvia Last modified

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

a screenshot that add time but show results within 24 hours

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:

a screenshot of selecting the Format Cells option after right-clicking the formula cell

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:

a screenshot of customizing the cell formatting

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

a screenshot showing the result of summing times is displayed over 24 hours

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