Clean repeated rows in Excel without losing useful records
Duplicate rows can make a customer list longer than it should be, inflate totals, or cause repeated entries during an import. Before removing them, decide whether duplicates mean every cell matches or whether a particular field—such as an ID or email—should define a repeat.
Open the workbook and choose the worksheet or data range that needs cleaning.
Select the matching columns and review whether the available options treat spaces, capitalization, and blank cells as equal or different.
Run duplicate removal, inspect the remaining rows and removed groups, and save the result as a separate workbook.
Choose which record should remain
Two rows with the same email address but different names or phone numbers may be a duplicate, an updated contact, or a shared account. Matching on every column is stricter and may leave near-duplicates; matching on one field can merge records that should stay separate. Use stable identifiers where possible and review conflicts before deciding which row to keep.
Removing duplicates can discard information, so keep the original workbook and compare row counts after cleaning. Check formulas, headers, and any other sheets that depend on the data before replacing the source file.