How do I convert an XLSX file to XLS?

File Format

Table of Contents Show

XLSX (Microsoft Excel Open XML Spreadsheet)
Upload xlsx-file
Convert xlsx to xls
Download your xls-file
Online and free xlsx to xls converter
Office Open XML Document
Microsoft Excel Binary File Format
How do I save a file as XLS format?
Is XLS and XLSX same?
How do I convert a XLSX file?
How do I convert XLSX to XLS 2016?

XLSX (Microsoft Excel Open XML Spreadsheet)

XLSX files are produced by the applications of Microsoft's 2007 Office suite, namely by the product called Microsoft Excel, a spreadsheet processing software that is known all around the globe. As a very efficient tool, Excel can format and create sp...

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How to convert xls to xlsx?

Step 1

Upload xlsx-file

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

Step 2

Convert xlsx to xls

Select xls or any other format, which you want to convert.

Step 3

Download your xls-file

Wait till your conversion process will be completed and click download converted xls file.

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Office Open XML Document

File extension	.xlsx
File category	🔵 documents
Programs	🔵 Microsoft Office 🔵 LibreOffice 🔵 Kingsoft Office 🔵 Google Docs
Main program	🔵 Microsoft Office
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.
Developer	🔵 Microsoft
MIME type	🔵 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Microsoft Excel Binary File Format

File extension	.xls
File category	🔵 documents
Programs	🔵 Microsoft Office 🔵 LibreOffice 🔵 Kingsoft Office 🔵 Google Docs
Main program	🔵 Microsoft Office
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.
Developer	🔵 Microsoft
MIME type	🔵 application/vnd.ms-excel

FAQ

❓ How can I convert xlsx to xls?

Firstly, select a xlsx to 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 xlsx to xls?

Images conversion usually takes a few seconds. You will convert xlsx to xls very quickly.

🛡️ Is it secure to convert xlsx to 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 xlsx to xls) is 100% safe.

📱 Can I convert xlsx to xls without software installation?

Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including xlsx to xls) online on your computer or mobile.

How do I save a file as XLS format?

To save your workbook in a different file format (like . xls or . txt), in the Save as type list (under the File name box), pick the format you want. Click Save.

Is XLS and XLSX same?

XLSX is a zipped, XML-based file format. Microsoft Excel 2007 and later uses XLSX as the default file format when creating a new spreadsheet. Support for loading and saving legacy XLS files is also included. XLS is the default format used with Office 97-2003.

How do I convert a XLSX file?

Click on the Office button, then Convert. You can also try opening the . xls file in Excel > then use the Save As command to save as an "Excel Workbook". Once you select that file type, the file extension will be xlsx and you can delete the old xls version.