Remove Duplicate Rows from Excel and CSV Files

Excel's built in "Remove Duplicates" button works great if your data is already perfectly formatted. The problem is, it almost never is. A row with "jane@email.com" and a row with "Jane@Email.com" look like duplicates to a human and totally different rows to Excel. Add a trailing space, a different capitalization on a name, or a date written two different ways, and suddenly you've got a customer list that's twice as long as it should be and an email campaign that hits the same person three times.

Clean That Sheet was built for that exact problem. We catch exact duplicates and near duplicates: rows that represent the same record but look different because of stray whitespace, inconsistent casing, mixed date formats, or small formatting differences. It's the kind of duplicate that hides from Excel's tools and shows up later as an awkward email or a wildly wrong report.

Upload your .csv, .xlsx, or .xls file and we'll scan every row. The free preview shows you exactly how many duplicates we found and what your top cleaned rows look like — so you can sanity check before you commit. Pay $1.99 and download the full deduplicated file. No subscription, no account, no row limits hiding behind a paywall.

Works great for customer lists, email lists, sales pipelines, recruiting trackers, inventory exports, survey results, and any spreadsheet that's been edited by more than one person. If duplicates are inflating your counts, breaking your reports, or making your data look bigger than it really is, this is the fix.