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dotXLSOpen Workspace

Find Duplicate Values

Find repeated values in one spreadsheet column and mark every duplicate occurrence.

Choose one column, set matching rules, preview repeated values, then add a Duplicate Status column as one reversible step.

Paste Data

Copy cells from Excel or Google Sheets and paste them here.

Import a spreadsheet file

Import CSV or XLSX data into the current dotXLS workspace. Files are processed in your browser.

Tools

Find duplicate values inside one worksheet column. The first row is protected as the header.

Find Duplicate Values

Blank cells are ignored. Every occurrence of a repeated nonblank value is marked Duplicate, including the first occurrence.

Undo and Redo controls are available with the current grid.

Paste spreadsheet data to create your workspace.

Name	Department	Amount
Ahmed	Sales	1200
Maria	HR	950

Your data stays in this browser tab and is not sent to WordPress.

Export result

Download the current workspace data after editing or cleaning.