CSV / Excel Data Cleaner

Clean CSV and Excel files instantly. Remove empty rows, delete duplicates, trim spaces, normalize headers, merge or split columns, and export cleaned data directly in your browser.

File: cleaned-data

0 rows / 0 columns

Ready

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Choose a CSV or Excel file

Supported formats: .csv, .xlsx, .xls

Cleaning controlsActions

Replace empty cells

Merge columns

Split column

Export

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PreviewFirst 50 rows

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Free CSV and Excel cleaner online

This free online CSV and Excel cleaner helps you remove duplicate rows, trim spaces, normalize headers, fill empty cells, merge columns, split columns, and export cleaned data directly in your browser.

It is useful for developers, analysts, students, operations teams, and anyone working with messy spreadsheets or exported CSV files.