What is .xls file extension?
.xls is a very common file extension used for spreadsheets created using Microsoft Excel 97-2003. This is the best spreadsheet solution available with desktop pushing capabilities. .xls files contain tables, formulas, tables, images, text graphs, charts, page formatting, print settings and a lot more. .xls was changed to .xlsx after Microsoft 2007 as the default file extension for spreadsheets.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.