I have 1000 phone numbers in one column. how can I find out if I have duplicate phone numbers in that column?
Any formula? Thanks!
=countif(A:A,A1)>1
copied down will say TRUE if duplicated
Microsoft MVP - Excel
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You could use Conditional Formating using a formula like this to highlight duplicates:
=COUNTIF($A$1:$A1000,A1)>1
Or use the above formula in an adjacent cell to return TRUE or FALSE and then sort.
Best option: Use Advanced Filter to create a new list of unique values.
Palmetto
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