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Convert XLSX files online instantly, no sign-up required. You can convert your XLSX documents on any platform—Windows, Linux, or macOS. Upload your file, choose the output format, and press convert. When the process is done, your ODP file will be ready for download.
The XLSX file's size and structure affect conversion time, though most files are processed in seconds. Advanced features allow you to convert password-protected documents and receive conversion results via email.
No matter where you are, convert your XLSX documents seamlessly on any device, including smartphones. Available online anytime, this conversion app is completely free for basic scenarios.
Check our videoXLSX is a widely used file format for spreadsheets, developed by Microsoft as part of the Office Open XML standard, succeeding the older XLS format. It is supported by Microsoft Excel, Google Sheets, LibreOffice Calc, and other spreadsheet applications, ensuring cross-platform compatibility. The format is based on XML and stored in a compressed ZIP container, enabling features like advanced formulas, charts, conditional formatting, and support for large datasets while maintaining smaller file sizes compared to its predecessor.
The OpenDocument Flat XML Presentation (ODP) file format is an open standard for storing presentation documents, part of the OpenDocument Format (ODF) family, designed for interoperability and accessibility. It is primarily used by applications like LibreOffice Impress, Apache OpenOffice, and other office suites that support ODF, enabling cross-platform compatibility and collaborative editing. The format is based on a flat XML structure, making it human-readable and easy to process, while also supporting advanced features such as embedded multimedia, animations, and slide transitions for dynamic presentations.
You can also convert XLSX into many other file formats. Please see the complete list below.