CleanMyExcel
100% Free Forever

Remove Duplicates Excel & CSV Online For FREE

Remove duplicate rows in Excel and CSV files instantly.
Secure, client-side processing. No sign-up required. Clean your data in 3 seconds.

Drag & Drop your file here

Supports .xlsx, .xls, and .csv files.
Maximum privacy: Files stay on your device.

Clean for Free (No Sign-up)

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Key Features of CleanMyExcel

100% Private

Files are processed entirely in your browser. Nothing is ever uploaded to a server.

Lightning Fast

Powered by advanced WebAssembly logic. Clean massive datasets in seconds.

Universal Support

Remove duplicates from standard .xlsx Excel files and common .csv data dumps. Works with any Excel or CSV format.

Frequently Asked Questions

It's simple. Drag and drop your Excel (.xlsx) or CSV file into the upload box above. Our secure client-side script instantly scans every row and removes duplicate entries in your Excel file. You can also check the 'Also remove blank rows' option to clean both duplicates and blank rows in one go. Once finished, you can download your clean file immediately.
Yes, 100%. We do not have a server to store your files. All processing happens right inside your web browser (client-side) using JavaScript. Your data never leaves your device.
Our Excel duplicate remover compares entire rows to identify duplicate rows. Two rows are considered duplicates if all their cell values match exactly (case-insensitive, whitespace-trimmed). This ensures accurate duplicate detection across your entire Excel dataset, helping you remove duplicate rows efficiently.

Yes! You can check the "Also remove blank rows" checkbox below the file uploader. When enabled, the tool will first remove all blank rows, then remove duplicate rows from the cleaned data.

If you only need to remove blank rows without removing duplicates, you can use our dedicated Remove Blank Rows tool instead.

No. This is a free web-based Excel duplicate remover. You don't need to install complex Excel Add-ins or VBA macros to remove duplicate rows. It works directly in your browser for both Excel (.xlsx) and CSV files, making it easy to remove duplicates in Excel without any installation.

Ready to remove duplicates in your Excel file?

Join thousands of users who trust our secure, client-side tool to remove duplicate rows in Excel and CSV files instantly.