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Old 03-10-2009, 06:52 PM   #1
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OpenOffice spreadsheet time function

In an OpenOffice spreadsheet I have a column that is
"time elapsed in seconds":

Is there a function that will convert this into
"time elapsed (mm:ss)":
Old 03-11-2009, 02:19 PM   #2
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Don't have OO in front of me at the moment but the concept would be pretty much the same in all spreadsheets. (Or even in a script using something like bc command:
1) Take the number and divide it by 60 rounding to 0 decimal places so it only shows you the whole number. This will give you minutes.
2) The the number and do a "modulo" function on it by 60 to get the remainder. e.g. Modulo of 70, 60 is 10 because 60 goes in once and has a remainder of 10.
3) You'd need to pad the numbers if they were less than 10 to get your formatted numbers to be say 01 and 06 rather than 1 and 6.
4) Since your original math is giving you integers you'd need to convert this to strings (text) to be able concatenate with the colon (e.g. 01:06).

Each of these steps are specific "functions" in a spreadsheet.
On the Excel I'm looking at I have a number in C4 like 67:
In D4 I put: =round(C4/60,0) for step 1. Answer is 1 (67/60 = 1)
In E4 I put: =mod(c4,60) for step 2. Answer is 7 (modulo of 67, 60)
In E5 I put: =text(D4, "00") for steps 3 and 4 to convert it from integer 1 to string 01..
In E6 I put: =text(E4, "00") for steps 3 and 4 to convert it from integer 7 to string 07.
In E7 I put: =E5&":"&E6 for step 4 final. Answer is 01:06. This uses built in "string math". Noted that instead of "+" used for "adding" values this uses ampersand for "adding" text. Also notice I had to quote the literal text I wanted (the colon).

Of course this can actually be all combined into one formula so instead of having what I show above for E5 through E7 I could just put in E7:
=+TEXT(ROUND(C4/60,0), "00")&":"&TEXT(MOD(C4,60), "00")
That one formula combines all the steps into one. I broke them down above for understanding.

What you need to do is find how OO does the rounding, modulo, value to text and string math. I imagine the help talks about it.
Old 03-11-2009, 03:54 PM   #3
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Assume your values are in column A. Set the format in column B to MM:SS. (Format Cells, first choose 13:37:13, then change the HH:MM:SS to MM:SS)
The formula you enter in B1 is:

Even if A1 > 59, B1 gives the MM:SS value.



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