Validate MAC Addresses
Check MAC hardware addresses in a spreadsheet column and identify invalid or blank values.
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
Validate common MAC address formats in one column without changing the source values.
Undo and Redo controls are available with the current grid.
MAC address validation analysis
Invalid MAC preview
Preview only. The current worksheet is unchanged.
Paste spreadsheet data to create your workspace.
Name Department Amount Ahmed Sales 1200 Maria HR 950
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Export result
Download the current workspace data after editing or cleaning.