Find Duplicates

3 lessons in order

Learn how to highlight duplicates in Google Sheets using COUNTIF, ARRAYFORMULA, COUNTIFS with criteria, and UNIQUE for unique lists.

Learn how to find duplicates in two columns in Google Sheets using Conditional Formatting, COUNTIF, and the Filter function for detection.

Learn how to use VLOOKUP in Google Sheets to find duplicates with ISNA, IFERROR, ARRAYFORMULA, helper columns, and the Statology method.