calculate number of days formula

[Ranae]

hi,
Can someone please help me with a formula to calculate number of days,
excluding weekend days?

A1 B1 C1
Start date End date Total days (excluding weekend)

 

[ozgrid.com]

Use the NETWORKDAY Function.

 

[Peter T]

That looks like a typo (missing S), try

=NETWORKDAYS(start_date,end_date,holidays)

Regards,
Peter T

 

[Bernd P]

Hello,

If you do no need to take into account holidays, I suggest to use the
4th formula shown at
http://sulprobil.com/html/date_formulas.html

Regards,
Bernd

 

[Rick Rothstein]

Bernd,

I thought you might be interested in seeing this short one-liner alternative
to your "cwd" function (which requires your "min" function to operate); it
is fully self-contained and, as such, relies only on built-in VB
functions...

Function CWD(D1 As Date, D2 As Date) As Long
CWD = DateDiff("d", D1, D2) - DateDiff("ww", D1, D2) * 2 - _
(Weekday(D2) <> 7) + (Weekday(D1) = 1) + (Weekday(D1, 2) < 6)
End Function

Note that if you remove the last addend, that is the "+(Weekday(d1, 2)<6)"
logical expression, then the function will return the same results as
Excel's NETWORKDAYS function. If we provide the function with an Optional
parameter, we can make it return either result (yours or NETWORKDAYS's) like
so...

Function CWD(D1 As Date, D2 As Date, Optional NWD As Boolean) As Long
CWD = DateDiff("d", D1, D2) - DateDiff("ww", D1, D2) * 2 - _
(Weekday(D2) <> 7) + (Weekday(D1) = 1) - NWD * (Weekday(D1, 2) < 6)
End Function

The default for the NWD (short for NetWorkDays by the way) parameter is
False, meaning it returns the same results as does your "cwd" function...
pass True in for the NWD parameter and the function returns the same values
as Excel's NETWORKDAYS function.

 

[Bernd P]

Hello Rick,

Thanks, I like that one! I put your cute and shorter version on my
site as well (same page as above).

Your version with the optional parameter NWD is not working as
expected, though:
It returns for 23/08/1933 - 14/10/1933 (NWD is False) 38 days and not
37 as the other versions do, for example.

Regards,
Bernd

 

[Rick Rothstein]

It should be noted that in my function, D1 must be the earlier date and D2
the later one (the DateDiff function requires this). Perhaps changing the
parameter names would help enforce this requirement...

Function CWD(StartDate As Date, EndDate As Date, _
Optional NWD As Boolean) As Long
CWD = DateDiff("d", StartDate, EndDate) - DateDiff("ww", StartDate, _
EndDate) * 2 - (Weekday(EndDate) <> 7) + (Weekday(StartDate) = 1) _
- NWD * (Weekday(StartDate, 2) < 6)
End Function

 

[Rick Rothstein]

Sorry, it looks like I implemented the NWD parameter backwards. This should
produce the correct results for the NWD parameter equaling True and False...

Function CWD(D1 As Date, D2 As Date, Optional NWD As Boolean) As Long
CWD = DateDiff("d", D1, D2) - DateDiff("ww", D1, D2) * 2 - (Weekday(D2) _
<> 7) + (Weekday(D1) = 1) - (Not NWD) * (Weekday(D1, 2) < 6)
End Function

And here it is with the renamed parameters to enforce the requirement that
D1 must be the earlier date and D2 the later one...

Function CWD(StartDate As Date, EndDate As Date, _
Optional NWD As Boolean) As Long
CWD = DateDiff("d", StartDate, EndDate) - DateDiff("ww", StartDate, _
EndDate) * 2 - (Weekday(EndDate) <> 7) + (Weekday(StartDate) = 1) _
- (Not NWD) * (Weekday(StartDate, 2) < 6)
End Function

 

[Bernd P]

Hello Rick,

Great. Tested and published as well. No need anymore for my cwd
version. Thanks.

Regards,
Bernd

 

[Rick Rothstein]

You are quite welcome... it was a fun "challenge" even though you didn't
present your posting as a challenge.

 

[Rick Rothstein]

A couple of comments about the text description for your formula solution
and for the functions I posted to you.

In the description for your formula, you allude to it being equivalent to
NETWORKDAYS, but you forgot to mention that it does not factor in holidays.
You also mentioned NETWORKDAYS is from the "analysis add-in"... actually, to
be technically correct, it is the "Analysis ToolPak" add-in. I don't know
whether you might want to mention that NETWORKDAYS is built into Excel
2007/2010 and is part of the "Analysis ToolPak" add-in for Excel 2003 and
earlier.

With regard to my functions, the first one (without the NWD parameter) also
has the requirement that D1 needs to be the earlier date and D2 the later
date. So you may want to use this version of that function instead...

Function CWD(StartDate As Date, EndDate As Date) As Long
CWD = DateDiff("d", StartDate, EndDate) - DateDiff("ww", StartDate,
EndDate) * 2 - _
(Weekday(EndDate) <> 7) + (Weekday(StartDate) = 1) +
(Weekday(StartDate, 2) < 6)
End Function

As for the presentation of both of my functions, you show them one following
the other; however, since they both have the same name, there might be a
chance that less experienced VB coders will be confused. Perhaps you could
change the lead in description to my function to this...

"Rick Rothstein came up with an elegant equivalent VBA version:"

where I left the word "elegant" in because you used it, not because I would
necessarily have described it that way. Then, you could use something like
the following text to lead into the second function...

"Rick also provide this more general version which, if the optional NWD
parameter is omitted or set to False, will return the same values as the
above version of CWD and if the optional NWD parameter is set to True, then
it will return the same results as Excel's NETWORKDAYS function (again,
without consideration for holidays):"

 

[Bernd P]

Hello Rick,

Agreed and changed, thanks.

Let us find another "challenge"

Regards,
Bernd