.xls
Microsoft Excel Spreadsheet (legacy)
Spreadsheets·application/vnd.ms-excel
What is a .xls file
The legacy binary Excel spreadsheet format used before Office 2007.
How to open a .xls file
Microsoft ExcelLibreOffice CalcGoogle Sheets
Extension
.xls
Category
Spreadsheets
MIME
application/vnd.ms-excel
Other Spreadsheets formats
FAQ — .xls
What is a .xls file?
.xls is a Microsoft Excel Spreadsheet (legacy). The legacy binary Excel spreadsheet format used before Office 2007.
What program opens a .xls file?
.xls files open with: Microsoft Excel, LibreOffice Calc, Google Sheets.
What is the MIME type of .xls?
The MIME type of .xls is "application/vnd.ms-excel" — the identifier browsers and servers use for this format.