Please help with time calculations

[Al]

I need to create a form that accept data entry in the following fashion:

Start End Duration
00:00 00:45 0.75
00:45 01:30 0.75

Start and End times must be in 24hr format. My problem is in the duration. I
am required to calculate the duration like the example above i.e. instead of
showing it as 0:45 min (00:00 (12:00 AM) – 00:45 (12:45 AM) = 0:45 minutes,
my client requires it to show as three quarters of an hour in decimal format
(0.75). how can I do that? I need the user to enter 00:00 and 00:45 then the
form will calculate the 0.75.
Thanks
Al

 

[Ofer]

try this

=1/(60/datediff("n",[Start],[End]))

 

[Marshall Barton]

A slightly simpler equivalent ;-)

=datediff("n",[Start],[End]) / 60

Or, to avoid a lot of decimals:

=Format(datediff("n",[Start],[End]) / 60, "0.00")
--
Marsh
MVP [MS Access]

=1/(60/datediff("n",[Start],[End]))

I need to create a form that accept data entry in the following fashion:

Start End Duration
00:00 00:45 0.75
00:45 01:30 0.75

Start and End times must be in 24hr format. My problem is in the duration. I
am required to calculate the duration like the example above i.e. instead of
showing it as 0:45 min (00:00 (12:00 AM) – 00:45 (12:45 AM) = 0:45 minutes,
my client requires it to show as three quarters of an hour in decimal format
(0.75). how can I do that? I need the user to enter 00:00 and 00:45 then the
form will calculate the 0.75.

 

[Ofer]

Thanks, I had a feeling that there should be something more simple, but i
couldn't put my fingure on it.
Thanks

A slightly simpler equivalent ;-)

=datediff("n",[Start],[End]) / 60

Or, to avoid a lot of decimals:

=Format(datediff("n",[Start],[End]) / 60, "0.00")
--
Marsh
MVP [MS Access]

=1/(60/datediff("n",[Start],[End]))

I need to create a form that accept data entry in the following fashion:

Start End Duration
00:00 00:45 0.75
00:45 01:30 0.75

Start and End times must be in 24hr format. My problem is in the duration. I
am required to calculate the duration like the example above i.e. instead of
showing it as 0:45 min (00:00 (12:00 AM) – 00:45 (12:45 AM) = 0:45 minutes,
my client requires it to show as three quarters of an hour in decimal format
(0.75). how can I do that? I need the user to enter 00:00 and 00:45 then the
form will calculate the 0.75.