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QUESTACE · FREE ONLINE TOOL

Excel Data Cleaner

Clean Excel and CSV files by removing duplicate rows, empty rows and empty columns, and trimming extra spaces.

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✓ Free · No login
Maximum 20 MB. For Excel files, the first worksheet and first row are used. Up to 100,000 data rows.
Choose cleaning options
What this tool does
  • Processes your file temporarily to create a cleaned copy.
  • Shows no changes to your original file; keep your original as a backup.
  • Duplicate detection compares the full row, not a selected ID column.
  • For sensitive records, avoid uploading confidential information to online tools.
Privacy reminder — avoid uploading confidential or sensitive documents. Download your result and keep a copy of your original file.