Convert CSV to XLSX, free
The conversion happens in your browser, so your file never leaves your device. No sign-up, no watermark, no limit.
Opens cleanly in Excel with accents and leading zeros kept as text where needed.
File won't open at all? Check a damaged CSV file for free.
Drop a .csv file here
Or choose a file from your device.
How to convert CSV to XLSX
- Drop your .csv file in the box above, or choose it from your device.
- Your browser converts it straight away. Nothing is uploaded.
- Click Download to save the .xlsx file.