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Convert XLS to XLSX
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You can convert XLS file to XLSX as well as to variety of other formats with free online converter.
How to convert xls to xlsx?How to convert xlsx to xls?
Select xls file, which you want to convert, from your computer, Google Drive, Dropbox or drag and drop it on the page.
Convert xls to xlsx
Select xlsx or any other format, which you want to convert.
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Just drop your xls files on the page to convert xlsx or you can convert it to more than 250 different file formats without registration, giving an email or watermark.
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Microsoft Excel Binary File Format
|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.|
|Main program||Microsoft Office|
Office Open XML Document
|Description||XLSX – is an e-book created with one of the versions of the Excel program older than 2007. Thus the data have the form of tables consisting of columns and lines. Each table is divided into cells with a unique address, consisting of numeric and alphabetic characters. Cells contain data, both manually entered, and information that was obtained as a result of calculations. The extension allows the use of images, diagrams, and graphic information. XLSX files are formatted based on the Open XML standard, which will enable you to compress data by the type of ZIP. The archive contains a file for describing the table and individual files for each of its worksheets. The format makes it possible to develop and edit complex multi-sheet spreadsheets with various formulas and data sources.|
|Technical details||Using the XLSX extension helps to optimize the file's content, the technology of managing, and restoring information. The format significantly increases the capabilities of binary files of obsolete Excel program variants. All applications that display XML can work correctly with the XLSX extension. Due to the preservation of data in XML format, reliable data storage is provided. This allows you to transfer files over local networks seamlessly.|
|Main program||Microsoft Office|
❓ How can I convert xls to xlsx?
Firstly, select a xls file you want to convert or drag and drop it. Secondly, select xlsx or any other 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 to xlsx?
Documents conversion usually takes a few seconds. You will convert xls to xlsx very quickly.
🛡️ Is it secure to convert xls to xlsx 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 to xlsx) is 100% safe.
📱 Can I convert xls to xlsx without software installation?
Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including xls to xlsx) online on your computer or mobile.