What file extension is used for Excel 2016 and later versions?

The file extension used for Excel 2016 and later versions is .xlsx. This format was introduced with Excel 2007 and represents the default file type for workbooks created in Excel versions 2007 and onwards. The .xlsx format is based on the Open XML format, which allows for a more efficient way to store data, supports larger files, and enhances data recovery capabilities compared to its predecessor .xls.

Using .xlsx files also enables features such as improved data management and compatibility with other programs that adhere to the same standard, making it a widely accepted format for sharing spreadsheets. It is specifically designed for use with newer versions of Excel, providing users with various functionalities and formatting options that are not available in older file formats.