Convert .XLSX to .XLS
This guide explains how to convert .XLSX files to .XLS and provides information about both file formats.
Convert .XLSX to .XLS now
Use ConvertAPI to convert
We may earn a commission when you use affiliate links. This supports our free file extension guides.
About .XLSX
XLSX is the default format for Excel workbooks, utilizing the Office Open XML standard. It stores data in a compressed ZIP format containing XML files for worksheets and other components.
XLSX files are widely-used spreadsheet files that store data, formulas, and charts, and are compatible with various spreadsheet applications.
Learn more about .XLSX.About .XLS
.XLS is a file format for spreadsheets created by Microsoft Excel, part of the Microsoft Office suite. It stores data in a tabular format and supports various features like formulas, charts, and macros.
.XLS files are spreadsheet documents created by Microsoft Excel, widely used for data organization and analysis.
Learn more about .XLS.Conversion tools
These tools support converting .XLSX to .XLS.
ConvertAPI
ConvertAPI is an enterprise-oriented file conversion REST API with per-converter OpenAPI schemas that specify allowed input extensions and target formats for each conversion endpoint.
Visit ConvertAPI Visit affiliate