Excel to CSV
Convert Excel spreadsheets to CSV format.
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Max 100MB per file · Up to 1 files
Supported Formats
Convert your Excel files to CSV format for free with Master Merge. All sheets are included in the output. Processing happens entirely in your browser.
How it works
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Process
Files are processed in your browser
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About Convert Excel to CSV
Master Merge's Excel to CSV converter turns your spreadsheet into a clean, comma-separated values file. CSV is the universal format for importing data into databases, analytics tools, and other spreadsheet apps.
The conversion uses SheetJS in your browser. The first sheet is exported by default; multi-sheet workbooks export as separate CSVs. Encoding is UTF-8 so all characters and emoji are preserved.
No upload, no signup, no limits — even sensitive customer data or internal records stay private on your device.
Why use Master Merge for convert excel to csv
- Universal CSV format for any tool
- UTF-8 encoding preserves all characters
- Handles multi-sheet workbooks
- No upload — fully private
- Free with no daily limits
Common use cases
- Import data into a database or analytics tool
- Prepare customer lists for email platforms
- Move data between spreadsheet apps
- Archive data in a long-lived plain text format