Clean & format CSV
Tidy spacing, blank rows and repeated rows in your CSV.
Your files stay on your device. Free. No sign-up.Drop your file here
CSV · up to 25 MB per file
Your files stay on your device. No upload needed.
CSV keeps values as text in the file, but spreadsheet apps may interpret them as formulas, numbers or dates. Import as text for exact values, or use CSV to Excel for explicit text cells.
How to clean & format csv
- Choose a UTF-8 CSV and its delimiter.
- Select only the cleanup changes you want.
- Download the cleaned CSV and review the result.
What you can use
UTF-8 CSV with consistent columns; up to 100,000 cells and 50,000 rows.
A little extra help
Will this remove similar-looking rows?
Only exact duplicate rows are removed when you select that option. If you also trim whitespace, matching is applied after trimming.
What if the tool cannot process my file?
Check the supported formats and limits above. A smaller file or an up-to-date desktop browser may help. Encrypted, damaged or unusually complex files can be unsupported. Your original file is not changed.