Spreadsheet Format

What is a .XLSX File?

Microsoft Excel Spreadsheet (.xlsx) - Specifications, details, and free conversion tools.

Technical Details & Specifications

Format Name:

Microsoft Excel Spreadsheet

File Extension:

.xlsx

Category:

Spreadsheet

MIME Type:

application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Standard XML spreadsheet workbook format featuring formulas, tables, and charts.

How to Open .XLSX Files

Files with the .xlsx extension can typically be opened using modern web browsers, media players, or native system viewers. If your operating system cannot open this file, you can convert it to a universal format like MP4, MP3, JPG, or PDF using SnapConvert without installing additional software.