Excel to CSV
Convert Excel spreadsheets (XLSX, XLS) to CSV. Every sheet is converted — download one or all at once. Runs entirely in your browser, files never leave your device.
Supports multi-sheet workbooks
Reads .xlsx and .xls workbooks. Each worksheet becomes its own CSV.
Everything runs locally in your browser — your spreadsheet is never uploaded.
How to convert Excel to CSV
Upload an XLSX or XLS spreadsheet and the tool converts the data into a plain CSV file you can download. CSV is a universal, lightweight format that imports cleanly into databases, code, and almost any other application — without the formatting and formula overhead of a full Excel workbook.
Why use CSV instead of Excel?
CSV files are tiny, open in any program, and are the standard format for importing data into databases, analytics tools and scripts. Converting an Excel sheet to CSV strips it down to the raw data so it transfers reliably. The conversion runs in your browser, so your spreadsheet is never uploaded.
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Frequently Asked Questions
How do I convert Excel to CSV?
Upload an .xlsx or .xls file and the tool converts every sheet to CSV. Download a single sheet or all sheets as a ZIP.
Does it support multi-sheet workbooks?
Yes. Each worksheet is converted separately and you can switch between them before downloading.
Is my spreadsheet uploaded?
No. Conversion runs entirely in your browser, so your spreadsheet never leaves your device.
Is the Excel to CSV converter free?
Yes, completely free with no sign-up and no limits.