OTS to XLS Converter

Batch convert ots files to xls online. Change ots to xls on Windows, Mac, iPhone and Android in 2 clicks.

Select files for conversion or drag and drop them to the upload area.
Your files are securely protected and available only to you.
All files are automatically deleted from our servers after 1 hour.

How to convert OTS files to XLS online?

Step-by-step instructions for converting ots files to xls

Upload OTS-file

Click "Choose File" button to select a ots file on your computer. OTS file size can be up to 100 Mb.

Convert OTS to XLS

Click "Convert" button to start conversion.

Download your XLS

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


  • ❓ How can I convert OTS to XLS?
    First you need to add file for conversion: drag and drop your OTS file or click the "Choose File" button. Then click the "Convert" button. When OTS to XLS conversion is completed, you can download your XLS file.
  • ⏱️ How long does it take to convert OTS to XLS?
    Document conversion is pretty fast. You can change OTS to XLS in a few seconds.
  • 🛡️ Is it safe to convert OTS to XLS on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including OTS to XLS) is absolutely safe.
  • 💻 Can I convert OTS to XLS on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our OTS to XLS converter works online and does not require software installation.

Information about OTS and XLS file formats

Full name OpenDocument Spreadsheet Template XLS - Microsoft Excel Binary File Format
File extension .ots .xls
MIME type application/vnd.oasis.opendocument.spreadsheet-template application/vnd.ms-excel
Developed by OASIS Microsoft
Type of format Spreadsheet
Description The extension .ots is used for a spreadsheet document used as a template. 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".
Technical details OpenOffice.org has created documentation of the Excel format. Since then, Microsoft has made the Excel binary format specification available to download freely.
File conversion OTS conversion XLS conversion
Associated programs Apache OpenOffice, LibreOffice Microsoft Office, LibreOffice, Kingsoft Office, Google Docs.
Wiki https://en.wikipedia.org/wiki/OpenDocument https://en.wikipedia.org/wiki/Microsoft_Excel#File_formats