CSV to XLSX
Convert CSV files to Excel XLSX
Drag & drop your file here
or click to browse. Max file size: 500MB
How to CSV to XLSX Online
- 1
Upload CSV
Drag and drop your CSV file into the converter.
- 2
Convert to XLSX
Click Convert. Your data is turned into a proper Excel workbook.
- 3
Download XLSX
Download your .xlsx file and open it directly in Excel or Google Sheets.
Why Use FileSwitch for CSV to XLSX?
- Creates a true .xlsx workbook
- Customizable sheet name
- Automatic detection of numbers and booleans
- Compatible with Excel, Sheets, and LibreOffice
- Handles large files up to your plan's size limit
Frequently Asked Questions
What Excel format is produced?
We produce .xlsx, the modern XML-based Excel format supported by all current spreadsheet applications.
Can I name the worksheet?
Yes. The sheet defaults to 'Sheet1', and you can customize it via the API options.