Document tool
CSV to Excel Converter
Convert CSV files to Excel spreadsheets (.xlsx). Free, private, no file stored.
CSV XLSX
PrivConvert
Privacy-first conversion
No files stored
In-memory processing
Deleted instantly
No sign-up needed
Complete the security check to begin
Turn data into spreadsheets
Got a CSV export from a database, API, or application? Convert it to a proper Excel spreadsheet you can sort, filter, and format.
- Auto-detect columns - CSV delimiters are parsed automatically
- Ready to format - add colors, formulas, and charts in Excel
- UTF-8 support - handles international characters correctly
Frequently Asked Questions
How are columns detected?
The converter automatically detects delimiters including commas, semicolons, and tabs.
What text encodings are supported?
UTF-8, Latin-1, and BOM-prefixed files are all handled automatically.
Can it handle large CSV files?
Yes, files up to 250 MB are supported with efficient streaming conversion.
Is this tool really free?
Yes, completely free with no hidden fees, no watermarks, and no sign-up required. You can convert as many files as you need.
Are my files private and secure?
Absolutely. Every conversion runs in an isolated, in-memory process. Your files never touch the disk, are never stored or shared, and are deleted from memory the moment your download is ready.