EXCEL time formula

Hello fellows,

I have this data on cell A1  258189107.3  where this is a tenth of a second, I need it in A2 to convert that data in Hours:Minutes:Seconds  , I saw in "format cell properties" an option for this but no so much in the actual formula...,is this possible?

thanks for your taking a look
ivan rosaAsked:
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In A2 use this formula:


Format that cell h:mm:ss


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If you want just the .3, you can use =MOD(A1,INT(A1))
ivan rosaAuthor Commented:
So I actually would like the one that could do the whole cell entirely regardless of fractions or whole numbers,  I just happen to pick that number but there are few other columns I need to do...the. I will copy paste the rest
The number you listed is not a valid date value. That number won't occur until the year 708783! If you have valid date values, you can format the cell to show just the time.
Rob HensonFinance AnalystCommented:
Assuming that the number 258189107.3 represents a number of seconds with the .3 being the tenth of a second, divide that number by 86400 and format as [hh]:mm:ss to convert to time.

86400 is the number of seconds in one day, this is made up of 24(hours) x60(minutes) x60(seconds).

Using [hh] will show all hours rather than resetting to zero each time it goes over 24.

Or without the custom format:

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