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OTS to XLSX converter

Convert OTS to XLSX online from any device with a free converter.

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About Spreadsheet converter

Convert OTS to XLSX files online with our free spreadsheet converter. Whether you're on Windows 10, Mac, Android or iPhone, converting OTS files is quick and easy.

Spreadsheet file formats like XLSX, XLS, ODS, and CSV are commonly used for organizing and analyzing data. XLSX and XLS are associated with Microsoft Excel and support advanced features, CSV is a simpler format, storing data as plain text. Popular applications for working with tables include Microsoft Excel, Google Sheets, and Apple Numbers.

To change OTS to XLSX just drop your file onto the upload form, pick the output format and hit the Convert button. After the conversion is finished, download your XLSX file instantly. No email needed.

Check our video
OTS

OpenDocument Spreadsheet Template

The OpenDocument Spreadsheet Template (OTS) is a file format used for creating reusable spreadsheet templates based on the OpenDocument standard, primarily for applications like spreadsheets. It is supported by various office suites, including LibreOffice, Apache OpenOffice, and Calligra Suite, enabling users to design and share pre-formatted spreadsheets. The OTS format is XML-based, storing layout, formulas, styles, and other settings, and supports advanced features like macros, conditional formatting, and data validation for efficient template creation and customization.

XLSX

Microsoft Excel Open XML Spreadsheet

XLSX is a widely used file format for spreadsheets, developed by Microsoft as part of the Office Open XML standard, succeeding the older XLS format. It is supported by Microsoft Excel, Google Sheets, LibreOffice Calc, and other spreadsheet applications, ensuring cross-platform compatibility. The format is based on XML and stored in a compressed ZIP container, enabling features like advanced formulas, charts, conditional formatting, and support for large datasets while maintaining smaller file sizes compared to its predecessor.

Add the conversion API to your app

  • Convert over 200 file formats — including PDF, Word, Excel, HTML, images, and many more
  • Load files from disk, URLs, FTP servers, or cloud storage (such as Amazon S3 or Azure)
  • Customize output settings — rotate and reorder pages, add comments, or apply watermarks
How it works

How to convert OTS to XLSX

Step 1
Click inside the file drop area to upload OTS file or drag & drop OTS file.
Step 2
Click on Convert button. Your OTS files will be uploaded and converted to XLSX result format.
Step 3
Download link of result files will be available instantly after conversion.
Step 4
You can also send a link to the XLSX file to your email address.
FAQ

Questions & Answers

Other Supported Conversions

You can also convert OTS into many other file formats. Please see the complete list below.

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