$ toolfu run excel-to-csv
Excel to CSV Converter — Convert Excel to CSV Online Free
Convert Excel spreadsheets to CSV format online for free. Supports XLSX, XLS, multiple sheets, and custom delimiters — runs in your browser.
all processing runs in your browser
excel-to-csv
delimiter
$ drop an Excel file here or click to browse
supports .xlsx, .xls, .xlsb, .xlsm, .ods — max 50MB
or paste from clipboard (⌘V / Ctrl+V)
Free Excel to CSV Converter
Convert Excel files to CSV format instantly in your browser. Supports all major spreadsheet formats.
Features
- XLSX, XLS, XLSB, XLSM, ODS support
- Multiple sheet handling
- Custom delimiters (comma, tab, semicolon, pipe)
- Download individual or all sheets
- 100% private — runs in your browser
$ cat FAQ.md
What Excel formats are supported?▶
XLSX, XLS, XLSB, XLSM, and ODS files are all supported via the SheetJS library.
Does it handle multiple sheets?▶
Yes. All sheets are parsed and you can switch between them. Download individual sheets or all at once.
Is my spreadsheet uploaded?▶
No. Parsing runs entirely in your browser using SheetJS. Your data never leaves your device.
Can I change the delimiter?▶
Yes. Choose between comma, tab, semicolon, or pipe delimiters.