Spreadsheet Format

XLS Converter — Free Online

Convert Microsoft Excel 97-2003 files to and from other formats. Fast, free, no registration required.

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Supports: XLS files

Max: 100MB (free) · 2GB (Pro)

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Convert to XLS

XLSX to XLS→CSV to XLS→ODS to XLS→

Convert from XLS

XLS to XLSX→XLS to CSV→XLS to ODS→

What is XLS?

XLS is the legacy Microsoft Excel format used before Office 2007. While superseded by XLSX, it's still widely found in enterprise data exports and archived files.

Format Details

Full Name: Microsoft Excel 97-2003
Extension: .xls

Key Features

Legacy support
Wide compatibility
Spreadsheet
Data analysis

Frequently Asked Questions

Upload your file, select XLS as the output format, and click Convert. Your converted file will be ready to download in seconds.

You can convert most spreadsheet formats to XLS, including XLSX, CSV, ODS, and more.

Yes! You can convert up to 5 files per day completely free. No registration required.