Convert XLS to OTS

Choose file to convert

You have the option to convert your xls file to ots, as well as a variety of other formats, using our free online converter.

How to convert xls to ots?

How to convert ots to xls?

Step 1

Upload xls-file

You can select xls file you want to convert from your computer, Google Drive, Dropbox or simply drag and drop it onto the page.

Step 2

Select «to ots»

Choose ots or any of the other 200+ supported formats you'd like to convert to.

Step 3

Download your ots file

Please wait for the conversion to complete, then click on the download button to obtain your converted file in the ots format.

The security of your files is our priority

Understanding the importance of the security of our users' data, we have implemented a number of measures to ensure reliable file conversion without the risk of information leakage or privacy violations.

Data encryption

All information uploaded to our platform is SSL encrypted, ensuring privacy during transmission.

Safe storage

After the conversion is completed, the files are stored on secure servers for 24 hours and are automatically destroyed, excluding access by third parties.

Harmless scripts

Our file conversion tools are regularly tested for malicious code or vulnerabilities to eliminate the risk of a potential cyber attack.

Best tool to convert xls to ots

xls to ots Fast and easy

Simply drag and drop your xls files onto the webpage, and you'll be able to convert them to ots or over 250 different file formats, all without having to register, provide an email address, or include a watermark.

Secure xls to ots Conversion

As soon as you upload your xls files, we instantly delete them. Converted files are then deleted after 24 hours. Furthermore, we ensure that all file transfers are secure through advanced SSL encryption.

No Software Installation Required

You don't have to go through the hassle of installing any software. We handle all xls to ots conversions in the cloud, which means that none of your computer's resources will be used in the process.

Microsoft Excel Binary File Format

Extension	.xls
Category	🔵 documents
Programs	🔵 Microsoft Office 🔵 LibreOffice 🔵 Kingsoft Office 🔵 Google Docs
Main program	🔵 Microsoft Office
Description	🔵 The .xls format is the default file format for spreadsheets created in Microsoft Excel, particularly in versions before Excel 2007. This binary file format can store data in cells organized in rows and columns, and it supports formulas, charts, graphs, and various formatting features to manipulate and visualize data. The .xls format was commonly used in business, finance, and any field requiring data analysis and presentation, but has since been largely replaced by the more advanced .xlsx format.
Technical details	🔵 The `.xls` format, primarily used for Microsoft Excel versions before 2007, stores spreadsheet elements such as worksheets, formulas, and macros. Being a proprietary binary format created by Microsoft, its undocumented internal structure has made compatibility with third-party software quite challenging. This format consists of binary records that contain data, formatting, and embedded objects, allowing for multiple worksheets, various functions, and inter-sheet referencing. `.xls` files can also include Visual Basic for Applications (VBA) macros, which enable automation and complex calculations. While supported in applications like OpenOffice Calc, there are options available to convert between `.xls` and other formats such as `.xlsx`. Despite security concerns related to macros, `.xls` is still commonly used due to its compatibility with older Excel versions and legacy systems. However, the newer `.xlsx` format, introduced in Office 2007 and utilizing XML and ZIP technologies, offers improved efficiency and security features.
Developer	🔵 Microsoft
MIME type	🔵 application/vnd.ms-excel

ots

Extension	.ots
Category	🔵 documents
Main program	🔵 OpenOffice Calc
Description	🔵 The OTS file format is used for templates created with the Calc application in the OpenDocument format. It is an XML-based format and is part of the OpenDocument specification, which is an open standard for document file formats used by many office productivity software suites, including OpenOffice.org, LibreOffice, and others.
Technical details	🔵 An OTS file is a pre-designed spreadsheet template that serves as a starting point for creating new spreadsheets. It usually includes pre-formatted cells, charts, and other elements that can be customized by the user. The format is highly portable and interoperable, allowing users to share templates across different applications and operating systems. The OTS format is based on the XML standard, making it extremely flexible and easy to work with. It can be accessed and edited using any text editor or specialized software such as LibreOffice or OpenOffice.org. The format supports a wide range of features, including multiple sheets, formatting, formulas, macros, and more.
Developer	🔵 Sun Microsystems
MIME type	🔵 application/vnd.oasis.opendocument.spreadsheet-template