Software & Apps > File Types 39 39 people found this article helpful What Is an XLS File? An XLS file is an Excel spreadsheet By Tim Fisher Tim Fisher Facebook Twitter Senior Vice President & Group General Manager, Tech & Sustainability Emporia State University Tim Fisher has more than 30 years' of professional technology experience. He's been writing about tech for more than two decades and serves as the SVP and General Manager of Lifewire. lifewire's editorial guidelines Updated on April 7, 2023 Reviewed by Jerrick Leger Reviewed by Jerrick Leger Jerrick Leger is a CompTIA-certified IT Specialist with more than 10 years' experience in technical support and IT fields. He is also a systems administrator for an IT firm in Texas serving small businesses. lifewire's editorial guidelines Tweet Share Email Tweet Share Email File Types File Types Apps Windows MS Office Linux Google Drive Backup & Utilities Design Cryptocurrency What to Know An XLS file is a Microsoft Excel 97-2003 worksheet file. Open one with Excel or Google Sheets. Convert to XLSX, CSV, PDF, and others with those same programs. This article describes XLS files, including how to open one and how to convert one to a different format, like Excel's newer XLSX format. What Is an XLS File? A file with the XLS file extension is a Microsoft Excel 97-2003 worksheet file. Later versions of Excel save spreadsheets as XLSX files by default. XLS files store data in tables of rows and columns with support for formatted text, images, charts, and more. Excel files that are macro-enabled use the XLSM file extension. How to Open an XLS File XLS files can be opened with any version of Microsoft Excel. If you don't have that program, you can use Microsoft's free Excel Viewer, which supports opening and printing the file as well as copying data out of it. Your next best option is Google Sheets, an online spreadsheet tool that can open, edit, print, and convert XLS files. It will first automatically convert the file to Google's proprietary format, but then it'll function much like it would if it were open in Excel. Learn how to use Google Sheets if this is your first time. If you don't like online apps, there are several other free Excel alternatives, including WPS Office and OpenOffice Calc. 9 Best Free Microsoft Office/365 Alternatives Gnumeric for Linux, and Apple Numbers on macOS, are also able to open XLS files. DocsPal is another option that works online, but it's just a viewer, so editing isn't allowed. How to Convert an XLS File If you're already using one of the spreadsheet programs we've already mentioned, converting is easiest via opening the file in that program and then saving it to a different format. This is by far the fastest way to save it to CSV, PDF, XPS, XML, TXT, and XLSX. If you don't have a spreadsheet editor installed, or don't want to install one, using a free document converter is another option. Zamzar is one example that works online to save the spreadsheet file to MDB, ODS, and others, including image formats like JPG and PNG. The DocsPal website also works. It supports converting from XLS to PDF, ODS, HTML, TXT, CSV, and more. If your file has data that you need in an open, structured format, the Mr. Data Converter online tool is a great option. It converts XLS to XML, JSON, and a number of other similar formats. Finally, for an offline option, we recommend Filestar. It runs on macOS and Windows and will convert your XLS spreadsheet to dozens of other formats, all listed here. Still Can't Open It? Is your file still unable to open properly using the suggestions from above? Be sure that you're reading the extension correctly and not confusing an XLR, XSL, XLW, or XSLT file with an XLS file. How to Recover a Forgotten XLS Password You can easily password protect XLS files using a program like Excel. You can also use the same program to remove the password. However, what do you do if you've forgotten the password to your XLS file? A free password recovery tool can be used to unlock one that's been protected with a "password to open" password. One free tool you can try that should find the password is Word and Excel password recovery wizard. The 5 Best Spreadsheet Apps for Android in 2023 Was this page helpful? Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit