Free XLSX Documents Files

XLSX is the modern spreadsheet format used by Microsoft Excel, introduced in Office 2007. It is based on XML and supports advanced data analysis features, including formulas, pivot tables, macros, and charts. XLSX files are widely used in finance, business, and data analysis for organizing and processing numerical data. They are compatible with Microsoft Excel, Google Sheets, and other spreadsheet applications, making them a standard for data storage and financial reporting.

Learn more about the MP3 file format including usage and technical details.