CSV cleaner and converter
Clean and convert CSV and Excel files: remove duplicates and empty rows, trim spaces, combine files, split large files and save as CSV, Excel or JSON.
- Files never leave your device
- CSV, Excel and JSON
- Free, no account
Clean in one pass
Trim spaces, remove empty rows and duplicates, and fix line breaks inside cells.
Convert
CSV with commas or semicolons, TSV, Excel XLSX and JSON, with £ and accents kept correct for Excel.
Split and combine
Split huge files by rows or by a column, or drop several files to combine them.
Questions
Why do £ signs look wrong when I open a CSV in Excel?
Excel guesses the wrong text encoding for CSV files. Keep Excel friendly ticked and the file opens correctly.
Can it handle big files?
Yes. Files with hundreds of thousands of rows work on most computers. The preview shows the first 60 rows; everything is saved.
Is anything uploaded?
No. Everything happens in your browser, on your device. Nothing you add or type is sent to this website or anywhere else.