Calculate turn around time

kgkev

Well-known Member
Joined
Jun 24, 2008
Messages
1,251
I have an enquiry open date in one column and a close date in another.

Is it possible to have a formula that calculates the average turn around time without calculating the individual times against each row?

Start date is in "B" close date is in "M"


This is what I have but I'm not sure if its accurate?

Code:
=(SUM('Completed Rejects'!M:M)-(SUM('Completed Rejects'!B:B)))/COUNT('Completed Rejects'!M:M)
 
Last edited:

Excel Facts

What is the last column in Excel?
Excel columns run from A to Z, AA to AZ, AAA to XFD. The last column is XFD.

lynxbci

Board Regular
Joined
Sep 22, 2004
Messages
201
Office Version
  1. 365
Platform
  1. Windows
  2. MacOS
Your formula is correct it works out the total time difference and then divides by the number of times which will give an average.

=(SUM(M:M)-SUM(B:B))/COUNT(M:M)

or

to ignore 0 times

=(SUM(M:M)-SUM(B:B))/COUNTIF(M:M,">0")

Kev
 

kgkev

Well-known Member
Joined
Jun 24, 2008
Messages
1,251
Thanks - More of a basic maths question than excel I suppose.
 
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