Excel: Find values in one column that are not in another

A quick note on how to compare two columns for values that are not found in another. I have a column with old values, and now that I have a new list, I want a quick way to see what values are in the old column and which ones are new...

Consider the 3 following columns in an Excel spreadsheet:
Old       New       Exists in Old?
--------- --------- --------------
123456    234567
234567    345678
345678    456789
567890    597890
  1.  Old       New       Exists in Old? 
  2.  --------- --------- -------------- 
  3.  123456    234567 
  4.  234567    345678 
  5.  345678    456789 
  6.  567890    597890 
I want the third column to say whether this is new or not.

I found this in a StackExchange site:

Method #1
=MATCH(B2, $A$2:$A$100, 0)

-- Check whether value in B2 exists in range of A2:A100.
-- Returns the index of column A in which the B2 value was found.
-- Returns #N/A for a value which is NOT in column A.
  1.  =MATCH(B2, $A$2:$A$100, 0) 
  3.  -- Check whether value in B2 exists in range of A2:A100. 
  4.  -- Returns the index of column A in which the B2 value was found. 
  5.  -- Returns #N/A for a value which is NOT in column A. 
Drag the formula in B2 down all the list as per the following screenshot. A value equal to "#N/A" means the value was NOT found in column A.

Values found in one column but not another

Method #2
Be careful with this one because if you copy the formula down, it may automatically modify the range. So the formula in the first row will be =COUNTIF(A2:A100, B2) but the formula in the second row will be =COUNTIF(A3:A101, B3):
=COUNTIF(A2:A100, B2)

-- Returns 1 if value in B2 was found in range A2:A100
-- Returns 0 if value in B2 was not found in range A.
  1.  =COUNTIF(A2:A100, B2) 
  3.  -- Returns 1 if value in B2 was found in range A2:A100 
  4.  -- Returns 0 if value in B2 was not found in range A. 

Category: Excel :: Article: 551

Credit where Credit is Due:

Feel free to copy, redistribute and share this information. All that we ask is that you attribute credit and possibly even a link back to this website as it really helps in our search engine rankings.

Disclaimer: Please note that the information provided on this website is intended for informational purposes only and does not represent a warranty. The opinions expressed are those of the author only. We recommend testing any solutions in a development environment before implementing them in production. The articles are based on our good faith efforts and were current at the time of writing, reflecting our practical experience in a commercial setting.

Thank you for visiting and, as always, we hope this website was of some use to you!

Kind Regards,

Joel Lipman

Related Articles

Joes Revolver Map

Joes Word Cloud


Badge - Certified Zoho Creator Associate
Badge - Certified Zoho Creator Associate

Donate & Support

If you like my content, and would like to support this sharing site, feel free to donate using a method below:

Donate to Joel Lipman via PayPal

Donate to Joel Lipman with Bitcoin bc1qf6elrdxc968h0k673l2djc9wrpazhqtxw8qqp4

Donate to Joel Lipman with Ethereum 0xb038962F3809b425D661EF5D22294Cf45E02FebF
© 2024 Joel Lipman .com. All Rights Reserved.