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File converter / Documents / Convert to XLSX / OTS converter / XLSX to OTS

Convert XLSX to OTS

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Choose file to convert to .ots
or drag and drop file

You can convert XLSX file to OTS as well as to variety of other formats with free online converter.

How to convert xlsx to ots?

How to convert ots 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 ots

Select ots or any other format, which you want to convert.
Step 3

Download your ots-file

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

Online and free xlsx to ots converter

Fast and easy
Just drop your xlsx files on the page to convert ots or you can convert it to more than 250 different file formats without registration, giving an email or watermark.
Don't worry about security
We delete uploaded xlsx files instantly and converted ots files after 24 hours. All files transfer with secured an advanced level of SSL encryption.
All in the cloud
You don't need to install any software. All xlsx to ots conversions make in the cloud and don't use any resources of your computer.

Office Open XML Document

File extension .xlsx
File category documents
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 the tables consisting of columns and lines. Each table is divided into cells that have a unique address, which consists 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 allows you to compress data by the type of ZIP. The archive contains a file for the description of the table and individual files for each of its worksheets. The format makes it possible to develop and edit complex multi-sheet spreadsheets with a variety of formulas and data sources.
Technical details Using the XLSX extension helps to optimize the content of the file, 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.
Programs
Microsoft Office
LibreOffice
Kingsoft Office
Google Docs
Main program Microsoft Office
Developer Microsoft
MIME type
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

ots

File extension .ots
File category documents
Main program OpenOffice Calc
Developer Sun Microsystems
MIME type
application/vnd.oasis.opendocument.spreadsheet-template

FAQ

❓ How can I convert xlsx to ots?
Firstly, select a xlsx file you want to convert or drag and drop it. Secondly, select ots 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 xlsx to ots?
Documents conversion usually takes a few seconds. You will convert xlsx to ots very quickly.
🛡️ Is it secure to convert xlsx to ots 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 ots) is 100% safe.
📱 Can I convert xlsx to ots without software installation?
Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including xlsx to ots) online on your computer or mobile.