Google sheets duration to seconds

Question

I have a cell formatted as a duration (6:49:00)
I want to convert that to an Integer of total seconds
This formula gives me the right number of seconds =C3*60
409:00:00 <-- But I want this as just 409

Answer 1

To convert duration to an integer expressing the number of seconds, use a formula such as

=value(A1*24*3600)

Time values are recorded so that 1 is one day. Multiplying by 24 (hours/day) and 3600 (seconds/hour) converts that to seconds. Then value makes it a number rather than duration.

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Old answer, about formatting only.

You don't need any formulas to format duration as the number of seconds.

1. Go to Format > Number > More formats > More data and time formats
2. Delete the pre-filled format fields and add "Elapsed seconds" from the dropdown menu.

Answer 2

I have found this solution:

let the cell A1 filled with duration like 1:22:33 , than formula

=HOUR(A1)*3600+MINUTE(A1)*60+SECOND(A1)

will do the trick.

For example, 1:01:01 -> 3661

Answer 3

=HOUR(A1) will NOT work if your hours in the duration is > 24 of course. So the last example is not correct.

What will work is the following.

Given: A duration in hours and minutes. eg 225:04 or 9:20 or 62:35 Format must be set as this (Elapsed hours:minutes)

=INDEX(SPLIT(A1, ":"), 0, 1)*60 + INDEX(SPLIT(A1, ":"), 0, 2)