Calculate number of days between 2 dates depending on column header

surkdidat

Active Member
Joined
Oct 1, 2011
Messages
369
Office Version
  1. 2016
Hi

Hope someone can help!

In Column A I have a start date
In Column B I have an end date (can be blank if product is "live") - (I can "end date this to 31/12/9999 if needed

In Columns C onwards I have the months from April 2020 onwards

What I need is a formula that looks at the start date in column A, the end date in column B, and then uses the months in Columns C onwards to calculate how many days that particular product has been live.

So if a product launched on 30 January 2021, it would count 2 days for January 2021 (30 & 31), and 28 days for February 2021.

Ideally, if its live can it calculate on todays date (so if it is 1 March 2021 when doing this, it would count 1 day, and then on Tuesday update it to 2.?

Thanks in advance!
 

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Fluff

MrExcel MVP, Moderator
Joined
Jun 12, 2014
Messages
56,406
Office Version
  1. 365
Platform
  1. Windows
How about
Excel Formula:
=DAYS(IF(B2="",TODAY(),B2),A2)+1
 

Dave Patton

Well-known Member
Joined
Feb 15, 2002
Messages
4,648
Office Version
  1. 365
  2. 2010
Platform
  1. Windows
Headings are dates like Jan 1 2021 Feb 1 2021

T202006a.xlsm
ABCDE
8StartEndJan-2021Feb-2021Mar-2021
930-Jan-2131-Dec-2122831
1026-Feb-2128-Feb-21030
11
9a
Cell Formulas
RangeFormula
C9:E10C9=MAX(0, MIN(EOMONTH(C$8, 0), $B9) + 1 - MAX(C$8, $A9))
B10B10=TODAY()
 
Solution

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