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Excel to CSV

Convert XLSX and XLS spreadsheets to CSV files. Each sheet is exported separately. Runs entirely in your browser.

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Drop an .xlsx or .xls file or browse

Microsoft Excel spreadsheet

What is Excel to CSV?

Excel to CSV converts XLSX and XLS spreadsheets into comma-separated values (.csv) files. CSV is the universal data interchange format — accepted by every database, data tool, and programming language.

How It Works

Drop your Excel file. SheetJS reads every sheet and converts the cell data to CSV format. If the workbook has multiple sheets, each is exported as a separate .csv file. Everything runs in your browser — nothing is uploaded.

Key Benefits

  • 100% browser-based — your files never leave your device
  • Each sheet is exported as its own CSV file
  • Handles XLSX (Excel 2007+) and legacy XLS format
  • Values, not formulas — calculated results are exported
  • Free — no account or registration needed

Frequently Asked Questions