Conversion
Convert XLSX CSV
Free online Excel spreadsheet to CSV converter. Lossy (size-optimized) quality, processed server-side, no signup required.
Convert XLSX to CSV now libreoffice Free tier Lossy (size-optimized) ~1.0s per MB
How to convert XLSX to CSV
- 1
Open the converter
Click the button above — the workspace opens with XLSX pre-selected as your source and CSV as your target.
- 2
Drop your Excel spreadsheet
Drag and drop, or click to browse. Your file is uploaded over HTTPS and processed on our private servers — never shared with third parties.
- 3
Download the CSV
The result downloads automatically when conversion finishes. First sheet only