Remove Duplicates in Excel Online

Find and remove repeated rows in your spreadsheets, or highlight them in color. Choose which columns to compare and download the clean file.

Drag your spreadsheet here

or click to choose it · XLSX, XLS, XLSM, ODS, CSV

Free and private: your file is processed in your browser and is never uploaded to any server.

What does removing duplicates mean?

Removing duplicates means deleting the rows that repeat the same information, leaving a single occurrence of each. A row can count as a duplicate when all of its columns match or only some of them, for example the email address.

If you would rather not delete anything, the tool can highlight duplicates with a color so you can review them yourself.

Advantages

  • Compares all columns or only the ones you choose.
  • Ignores case, extra spaces and accents if you need it to.
  • Keeps the first or the last occurrence.
  • Summary and preview of duplicates before downloading.
  • Private: the file is processed in your browser.

How to remove duplicates in Excel

  1. Drag an XLSX, XLS, XLSM, ODS or CSV file onto the tool.
  2. Choose the sheet and the columns that define a duplicate.
  3. Adjust the comparison and choose to remove or only highlight.
  4. Click "Find duplicates" and check the summary.
  5. Download the result.

Ideas for using it

  • Clean mailing lists before a campaign.
  • Clean up customer or supplier databases.
  • Avoid orders or payments recorded twice.
  • Unify inventories combined from several sources.
  • Check repeated registrations or survey answers.

Tips for the best result

  • Choose only the key column (for example, email) to find repeated people.
  • Turn on "ignore case and spaces" for data typed by hand.
  • Use "highlight only" if you want to review before deleting.
  • Mark the first row as the header so it is not compared.

Frequently asked questions

Is it free to remove duplicates?

Yes, with no sign-up.

Are my files uploaded?

No. The file is processed in your browser and is never sent to the server.

Can I look for duplicates in just one column?

Yes. Choose one or more columns and only those will be compared.

Is formatting kept?

Yes. In .xlsx files, fonts, colors, borders, number formats, column widths, merged cells, comments and images are kept. The other sheets stay untouched.

Can I mark duplicates instead of deleting them?

Yes. With "highlight only", duplicate rows are painted in the color you choose and nothing is deleted.

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