Microsoft Excel Spreadsheet (.XLSX)
XLSX is the default spreadsheet format for Microsoft Excel since 2007, based on the Office Open XML standard. It stores data in worksheets organized into rows and columns, supporting formulas, charts, pivot tables, conditional formatting, and macros. XLSX uses ZIP-compressed XML files, resulting in smaller file sizes than the legacy XLS format.
Advantages of Microsoft Excel Spreadsheet
What the XLSX format does well, and why you might choose it.
- Rich feature set including formulas, charts, pivot tables, and conditional formatting
- Widely compatible with Excel, Google Sheets, and LibreOffice Calc
- Compressed XML format results in smaller files than legacy XLS
Limitations of Microsoft Excel Spreadsheet
What the XLSXformat doesn't do well, and when to choose another format.
- Complex spreadsheets may not render correctly in non-Excel applications
- Not suitable for large-scale data processing compared to databases or CSV
- Formulas and macros can introduce security risks
What XLSX files are used for
- Business data analysis, budgets, and financial reports
- Data collection and organization in tabular format
- Reporting dashboards with charts and pivot tables
Convert to XLSX
The most common formats people convert to XLSX, ready to convert in seconds.
Convert XLSX to other formats
Convert Microsoft Excel Spreadsheet files into the format you actually need.
Frequently asked questions about XLSX
What is a .XLSX file?
XLSX is the default spreadsheet format for Microsoft Excel since 2007, based on the Office Open XML standard. It stores data in worksheets organized into rows and columns, supporting formulas, charts, pivot tables, conditional formatting, and macros. XLSX uses ZIP-compressed XML files, resulting in smaller file sizes than the legacy XLS format.
What is the MIME type of XLSX?
The official MIME type for XLSX files is application/vnd.openxmlformats-officedocument.spreadsheetml.sheet. This is the value web servers and applications use to identify the format when transferring files.
What category does XLSX belong to?
XLSX is a Document Converter format. Files in this category share common conversion paths and use cases.
How do I open a .XLSX file?
XLSX files are typically opened by software that natively supports the Microsoft Excel Spreadsheetformat. If you don't have a compatible application, the most reliable approach is to convert the file to a more universal format using the converters listed above. Most Microsoft Excel Spreadsheet files convert to widely-supported alternatives in seconds.
Have a XLSX file you need to convert?
Free, instant, no signup. Files deleted within an hour of upload.
Convert XLSX to MD