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Home/ Questions/Q 8269841
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Editorial Team
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Editorial Team
Asked: June 8, 20262026-06-08T06:21:53+00:00 2026-06-08T06:21:53+00:00

Using MS Excel 2010. A column of hours, mins, secs e.g. 12345:34:34 12345:34:34 12345:34:34

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Using MS Excel 2010.

A column of hours, mins, secs e.g.

12345:34:34
12345:34:34
12345:34:34

Is totalled as

00000:00:00

The cells’ format is set to [h]:mm:ss

Can anyone suggest a way of getting the correct answer please?
I’ve tried =a1+a2+a3 as well as =sum(a1:a3)

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  1. Editorial Team
    Editorial Team
    2026-06-08T06:21:54+00:00Added an answer on June 8, 2026 at 6:21 am

    You could also try this formula and format the result as [h]:mm:ss …

    =SUMPRODUCT(LEFT(A1:A3,FIND(":",A1:A3)-1)/24+REPLACE(A1:A3,1,FIND(":",A1:A3)-1,0))
    
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