Can I convert a specific sheet?

Yes. If your workbook contains multiple sheets, a dropdown lets you select which one to convert. Only the selected sheet is exported.

What CSV format is produced?

The output uses standard comma-separated values with proper quoting for fields that contain commas, quotes, or newlines.

No. Your file is processed entirely in your browser using the SheetJS library. Nothing leaves your device.

Spreadsheet Tools

Upload an Excel file to convert it to CSV. Choose a sheet, preview, and download — all in your browser.

Upload an Excel file to convert it to CSV. Files are processed in your browser and are not uploaded.

Click to upload .xlsx or .xls

Files are processed in your browser and are not uploaded to any server.

Can I convert a specific sheet?: Yes. If your workbook contains multiple sheets, a dropdown lets you select which one to convert. Only the selected sheet is exported.
What CSV format is produced?: The output uses standard comma-separated values with proper quoting for fields that contain commas, quotes, or newlines.
Is my file uploaded to a server?: No. Your file is processed entirely in your browser using the SheetJS library. Nothing leaves your device.