How to Remove the Duplicates in Excel Online - Free Tool

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How to remove duplicates in Excel?

Searching how to remove the duplicates in Excel, remove duplicates on Excel, or delete duplicates in a column? This free tool replaces Excel's Data → Remove Duplicates: upload .xlsx or .csv, select key column(s) like email or order ID, preview duplicate groups and rows to remove, then download a clean file. Supports full-row dedup, keep last, mark duplicates, and unique-values export. Files are uploaded for temporary processing only and deleted immediately after export—we never store or backup your spreadsheet.

Features

Remove by column
Pick one or more columns—matches how to remove duplicates in Excel column
Find duplicates
Preview duplicate groups and rows to remove—find duplicates before deleting
Remove all duplicates
Compare full rows to remove all duplicates at once
Keep first or last
Keep first occurrence (Excel default) or keep last
XLSX & CSV export
Download deduped file, marked copy, or unique values list

Use cases

Deduplicate email or phone lists
Clean duplicate order IDs, SKUs, or employee numbers
Remove duplicates after merging spreadsheets
Find and delete duplicates before CRM or database import
No Excel installed or unfamiliar with Remove Duplicates menu

How to use

Upload .xlsx, .xlsm, or .csv (row 1 = headers)
Choose sheet and key column(s); optional keep first/last, ignore case
Click Preview to see duplicate count, groups, and rows to remove
Click Download for deduped XLSX or CSV

FAQ

QHow to remove duplicates in Excel column?

Upload your file and check only the target column (e.g. Email) under Key columns. Duplicate rows are removed entirely; the first occurrence is kept by default.

QHow to find duplicates in Excel?

Click Preview to see stats and duplicate groups; or set output mode to Mark duplicate rows and download a highlighted or flagged file.

QHow to remove all duplicates in Excel?

Click Select none for key columns—the tool compares full rows and keeps one copy of each identical row.

QHow to delete duplicates in Excel?

Delete and remove mean the same here: duplicate rows are deleted (entire row removed, not just the cell value).

QCan I remove duplicates without Excel?

Yes. Upload in your browser—no Microsoft Excel install or Data menu required.

QIs my file uploaded?

Files are uploaded for temporary processing only and deleted immediately after export—we never store or backup your spreadsheet.

Remove duplicates in Excel vs online

Desktop Excel: select range → Data → Remove Duplicates → check columns → OK. This online tool follows the same logic with preview-first workflow, plus CSV support, keep-last, and mark-duplicates. Trending searches—how to remove the duplicates in Excel, remove duplicates on Excel, remove duplicates from a column in Excel, find duplicates in Excel—all map to the options above.

Example: customers.csv, Email column → 120 rows → 8 duplicates → download 112 rows

Remove Duplicates from Excel

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