.xlsxMIME: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Sample XLSX Files - Free Excel Spreadsheet Downloads
XLSX is an Open XML spreadsheet format used by Microsoft Excel, Google Sheets, and LibreOffice Calc for tabular calculation and data storage.
Available Test Files
Click to download clean, valid .xlsx sample files directly.
Financial Data Spreadsheet14 KB
Spreadsheet with multiple columns (ID, Name, Revenue, Date, Status) and calculation rows.
sample-financial.xlsx
Format Specifications
File Extension.xlsx
MIME Content-Typeapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Developer / StandardMicrosoft
Initial Release2007
Official StandardECMA-376 / ISO/IEC 29500
Common Testing Use Cases
- Testing spreadsheet import scripts and ETL pipelines
- Validating data grid components in web applications
- Testing spreadsheet formula execution