XLS to 7Z Converter

Select files for conversion or just drag and drop them to the upload area

How to convert XLS files to 7Z online?

Step 1.

Upload XLS-file

Click "Choose File" button to select a xls file on your computer. XLS file size can be up to 50 Mb.
Step 2.

Convert XLS to 7Z

Click "Convert" button to start conversion.
Step 3.

Download your 7Z

When the conversion process is complete, you can download the 7Z file.

Information about XLS and 7Z file formats

Name XLS 7Z
Full name XLS - Microsoft Excel Binary File Format 7Z - 7z Archive
File extension .xls .7z
MIME type application/vnd.ms-excel application/x-7z-compressed
Developed by Microsoft Igor Pavlov
Type of format Spreadsheet Data compression
Description Microsoft Excel up until 2007 version used a proprietary binary file format called Excel Binary File Format (.XLS) as its primary format. Excel 2007 uses Office Open XML as its primary file format, an XML-based format that followed after a previous XML-based format called "XML Spreadsheet". 7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License.
Technical details OpenOffice.org has created documentation of the Excel format. Since then Microsoft made the Excel binary format specification available to freely download. The main features of 7z format: Open architecture, High compression ratio, Strong AES-256 encryption, Ability of using any compression, conversion or encryption method, Supporting files with sizes up to 16000000000 GB, Unicode file names, Solid compressing, Archive headers compressing.
File conversion XLS conversion 7Z conversion
Associated programs Microsoft Office, LibreOffice, Kingsoft Office, Google Docs. 7-Zip
Wiki https://en.wikipedia.org/wiki/Microsoft_Excel#File_formats https://en.wikipedia.org/wiki/7z