Which formula is correct for calculating times?
 

I built a spreadsheet to calculate hours worked; I did it over a couple
of weeks, reading and learning as I went. During the time I was doing
this, somehow I ended up with 2 different formula for calculating hours
worked...these a

=IF(N31O31,MIN(("24:00"-N31+O31)*24,7.25),MIN((O31-N31)*24,7.25))

and

=IF(N32O32,CEILING(("24:00"-N32+O32),7.25),MIN((O32-N32)*24,7.25))

where N and O are the start & finsh times respectively.

Both seem to calculate properly, but does anyone know which is the
better formula to use...of does it matter ? Thanks.


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djm
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Which formula is correct for calculating times?
 

Hi!

They both seem to work (not exhaustively tested) but give this a try:

=MIN((O31-N31+(O31<N31))*24,7.25)

Biff

"djm" wrote in message
...

I built a spreadsheet to calculate hours worked; I did it over a couple
of weeks, reading and learning as I went. During the time I was doing
this, somehow I ended up with 2 different formula for calculating hours
worked...these a

=IF(N31O31,MIN(("24:00"-N31+O31)*24,7.25),MIN((O31-N31)*24,7.25))

and

=IF(N32O32,CEILING(("24:00"-N32+O32),7.25),MIN((O32-N32)*24,7.25))

where N and O are the start & finsh times respectively.

Both seem to calculate properly, but does anyone know which is the
better formula to use...of does it matter ? Thanks.


--
djm
------------------------------------------------------------------------
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http://www.excelforum.com/member.php...fo&userid=4793
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Which formula is correct for calculating times?
 

....can you tell me the difference b/w the 2 formulas that I have in my
spreadsheet..in terms of the way that they work...and how do they
compare to yours ?.....or are all 3 different, but equally valid ways
of doing the same thing?


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djm
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Which formula is correct for calculating times?
 

djm Wrote:
I built a spreadsheet to calculate hours worked; I did it over a couple
of weeks, reading and learning as I went. During the time I was doing
this, somehow I ended up with 2 different formula for calculating hours
worked...these a

=IF(N31O31,MIN(("24:00"-N31+O31)*24,7.25),MIN((O31-N31)*24,7.25))

and

=IF(N32O32,CEILING(("24:00"-N32+O32),7.25),MIN((O32-N32)*24,7.25))

where N and O are the start & finsh times respectively.

Both seem to calculate properly, but does anyone know which is the
better formula to use...of does it matter ? Thanks.

CEILING won't do the same as MIN so they won't always give the same
result. try start time 22:00 and end time 05:00.....

What's the intent? If you want the differnece between the two times but
not to exceed 7.25 hours then use Biff's suggestion or this which does
the same

=MIN(MOD(O31-N31,1)*24,7.25)


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daddylonglegs
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