.XLSX File Extension

There are 2 file types use the .XLSX file extension:

  1. Microsoft Excel Open XML Spreadsheet
  2. Microsoft Excel Spreadsheet

1. Microsoft Excel Open XML Spreadsheet

Microsoft Excel Open XML Spreadsheet

An XLSX file is an Excel spreadsheet created by Microsoft Excel or another spreadsheet program, such as OpenOffice Calc or Apple Numbers. It stores data in worksheets, which contain cells arranged in a grid of rows and columns, and may also contain charts, mathematical functions, styles, and formatting. XLSX files are commonly used to store financial data and to save simple or complex mathematical models.

Workbook1.xlsx - The default filename Microsoft Excel gives to new workbooks beginning with Excel 2007.

You can open XLSX files with Microsoft Excel in Windows and in macOS. Excel is the best option for opening XLSX files because it fully supports the formatting of Excel spreadsheets, which includes images, graphs, and spacing of data fields. Excel is also available for Android and iOS devices.

There are a large number of other spreadsheet programs that can open and edit XLSX files but they may not fully support the formatting of the original spreadsheets. Alternative programs include Corel Quattro Pro (Windows), Apple Numbers (Mac), and OpenOffice Calc (multiplatform).

You can also open XLSX files with various web programs. Google Sheets is a great free option that allows you to upload an XLSX file and view, edit, save, and convert the spreadsheet.

Updated: April 23, 2020

2. Microsoft Excel Spreadsheet

Microsoft Excel Spreadsheet

An XLSX file is an Excel spreadsheet created by Microsoft Excel or another spreadsheet program, such as OpenOffice Calc or Apple Numbers. It stores data in worksheets, which contain cells arranged in a grid of rows and columns, and may also contain charts, mathematical functions, styles, and formatting. XLSX files are commonly used to store financial data and to save simple or complex mathematical models.

Workbook1.xlsx - The default filename Microsoft Excel gives to new workbooks beginning with Excel 2007.

You can open XLSX files with Microsoft Excel in Windows and macOS. Excel is the best option for opening XLSX files because it fully supports the formatting of Excel spreadsheets, which includes images, graphs, and spacing of data fields. Excel is also available for Android and iOS devices.

There are a large number of other spreadsheet programs that can open and edit XLSX files, but they may not fully support the formatting of the original spreadsheets. Alternative programs include Corel Quattro Pro (Windows), Apple Numbers (Mac), and OpenOffice Calc (multiplatform).

You can also open XLSX files with various web programs. Google Sheets is a great free option that allows you to upload an XLSX file and view, edit, save, and convert the spreadsheet.

Updated: May 28, 2021

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