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XLS to CSV Converter

Convert legacy Excel .xls (97-2003) files to CSV — free and private in your browser.

Drop your file here or click to upload

Supports XLS files up to 100MB

How to Convert

  1. Upload your .xls file or drag it onto the page
  2. Pick the sheet to convert if the workbook has more than one
  3. Choose your delimiter and encoding options
  4. Download the CSV file

Features

  • Reads legacy Excel .xls (97-2003) workbooks
  • Sheet selector for multi-sheet workbooks
  • Choose the delimiter (comma, tab, semicolon, pipe)
  • Select output encoding (UTF-8, UTF-8 BOM, Latin-1)
  • Runs entirely in your browser — files never leave your device

Use Cases

  • Modernize old .xls exports into universal CSV files
  • Extract legacy spreadsheet data for a database or CRM import
  • Prepare .xls data for scripts and data pipelines

Frequently Asked Questions

Does this open old .xls files?

Yes. It reads the legacy Excel 97-2003 .xls format and converts any sheet to CSV. For modern workbooks, use our XLSX to CSV converter.

What happens to formulas in the .xls file?

Formulas are exported as their calculated values, so the CSV contains the results rather than the formula text.

Can I choose the delimiter and encoding?

Yes. Export with a comma, tab, semicolon, or pipe delimiter and UTF-8, UTF-8 with BOM, or Latin-1 encoding.

Is my file uploaded to a server?

Never. The conversion runs locally in your browser, so your data stays private and works offline.

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Need to convert the other way? Try our Csv To Xls