Excel to CSV
Convert Excel spreadsheets (.xlsx, .xls) to CSV format in your browser. Choose which sheet to export from multi-sheet workbooks. Handles merged cells and special formatting. Uses SheetJS — no server upload, no signup required.
Updated June 2026
- 1Upload your Excel file
- 2Conversion runs instantly
- 3Download your CSV file
Drop your Excel file anywhere, click to browse
XLSX, XLS files
How to Use Excel to CSV
- 1
Upload your Excel file
Drag and drop your Excel file into the upload area, or click to browse and select it from your device. Nothing is sent to a server.
- 2
Conversion runs instantly
ToolBubble converts the file to CSV directly in your browser — no waiting in an upload queue.
- 3
Download your CSV file
Once processing finishes, the converted CSV file downloads automatically to your device.
Frequently Asked Questions
Which Excel file formats are supported?▼
Can I choose which worksheet to export?▼
How are merged cells handled?▼
Are formulas preserved in the CSV?▼
Is the file uploaded to a server?▼
How to use Excel to CSV
- 1
Upload your Excel file
Drag and drop your Excel file into the upload area, or click to browse and select it from your device. Nothing is sent to a server.
- 2
Conversion runs instantly
ToolBubble converts the file to CSV directly in your browser — no waiting in an upload queue.
- 3
Download your CSV file
Once processing finishes, the converted CSV file downloads automatically to your device.
Frequently asked questions
Everything you need to know about excel to csv.
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