Convert CSV to XLSX
Convert CSV data to Excel spreadsheet — free, instant, and private. Files never leave your browser.
Convert CSV to XLSX Now →
🔒 Browser Processing🆓 100% Free⚡ Instant
How to Convert CSV to XLSX
1
Upload
Drag your .csv file or click to browse
2
Convert
Click Convert — processing starts instantly
3
Download
Save your .xlsx file to your device
FAQ — CSV to XLSX Conversion
How do I convert CSV to XLSX?
Upload your .csv file to ViewAnyFile.app/convert, select XLSX as the output format, and click Convert. The converted file will download instantly.
Is the CSV to XLSX converter free?
Yes! ViewAnyFile.app's CSV to XLSX converter is completely free with no account or signup required.
Is it safe to convert CSV to XLSX online?
Absolutely. Your file is processed entirely in your browser using WebAssembly — it never leaves your device.
What is the maximum file size?
There is no hard limit for client-side conversions. Performance depends on your device — most files under 100MB convert smoothly.