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File converter / Documents / XLS

Online XLS converter

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Choose file to convert to .xls
or drag and drop file

You can convert documents to XLS format with free online converter.

How to convert to xls
Step 1

Upload file

Select file, which you want to convert from your computer, Google Drive, Dropbox or drag and drop it on the page
Step 2

Select «to xls»

Select xls or any other format, which you want to convert (more 200 supported formats)
Step 3

Download your xls file

Wait till your file will be converted and click download xls -file

Online and free xls converter

Fast and easy
Just drop your xls files on the page and you can convert it to more than 250 different file formats without registration, giving an email or watermark.
Don't worry about security.
We delete uploaded xls files instantly and converted files after 24 hours. All files transfer with secured an advanced level of SSL encryption.
All in the cloud
You don't need to install any software. All xls conversions make in the cloud and don't use any resources of your computer.
Microsoft Excel Binary File Format
File extension .xls
File category documents
Description XLS – is a spreadsheet created by a popular Microsoft Excel application. It includes document data that is located in cells that have a specific address. They can contain formulas, mathematical equations associated with the information in other cells, and fixed information. It is often used for the development of graphs and charts. The format allows us to store and edit a broad range of parameters - images, tables, macros, types, diagrams. It has been widely used until the appearance of the 2007 version of Excel, and then it was replaced with the XMLSS extension. The information inside the XLS document is contained in a series of static-size streams. Their location is described using several segment distribution tables. It differs in backward compatibility and supports various file formats created for DOS. It is often used by web browsers to exclude the use of binary formats. The utility is included in the Microsoft Office suite and, in addition to Excel, can be opened by various applications like Apache Open Office, Libre Office, adapted to Mac OS, Windows, or Linux.
Technical details The format's relevance is explained by its simplicity, although it does not support separate functions, for example, storing VBA macros. Until XMLSS appeared, the Excel application used the Biff extension when formatting, created based on the IFF container format. Due to this, changes to the book templates and their contents were available. After introducing the new format in 2007, the program has not lost the backward compatible properties, which guarantees the wide distribution of XLS in the future. Subsequently, the XLS extension was replaced by the XLSM, XLSB, and XLSX formats.
Programs
Microsoft Office
LibreOffice
Kingsoft Office
Google Docs
Main program Microsoft Office
Developer Microsoft
MIME type
application/vnd.ms-excel

FAQ

❓ How can I convert xls?
Firstly, select a xls file you want to convert or drag and drop it. Secondly, select a format you want to convert your file to. Then click convert and wait until your file is converted
⏳ How long should I wait to convert xls?
Documents conversion usually takes a few seconds. You will convert xls very quickly.
🛡️ Is it secure to convert xls on OnlineConvertFree?
Sure! We delete your uploaded and converted files, so nobody has access to your information. All types of conversion on OnlineConvertFree (including xls) is 100% safe.
📱 Can I convert xls without software installation?
Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including xls) online on your computer or mobile.