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Convert your XLSX files online—no registration needed. No matter your platform—Windows, Linux, or macOS—you can convert your XLSX documents rapidly. Drag and drop your file onto the upload form, pick the output format you need, and hit the convert button. After the conversion is finished, download your XLAM file instantly.
Conversion time varies based on the XLSX file's size and complexity, but most files convert within seconds. Our advanced options include converting secured documents and delivering conversion results straight to your inbox.
Easily convert your XLSX documents from any location and any device, even on mobile. This conversion app is always accessible online and free for basic use.
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 XLAM file format is a Microsoft Excel Add-in used to extend the functionality of Excel by adding custom commands, functions, and tools. It is primarily created and used in Microsoft Excel and can be opened with compatible spreadsheet applications like LibreOffice Calc or Apache OpenOffice. The format is based on the Open XML standard, containing macros, VBA code, and custom user interface elements, enabling advanced automation and integration within Excel workflows.
You can also convert XLSX into many other file formats. Please see the complete list below.