Convert OTS to XLSX Files Online for Free.
Free online tool to convert ots to xlsx files quickly and securely. No installation required – start converting your files in just a few clicks!
Drag and drop your files here or click to upload.
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Maximum file size is 10MB
How It Works
How to Convert OTS to XLSX
Click inside the file drop area to upload your OTS file or drag & drop it.
Select XLSX as the output format and click the 'Convert' button.
Download the converted XLSX file instantly after conversion.
You can also send a link to the converted file via email. (Optional)
Convert Your OTS files to other formats
RunConvert.com can convert your OTS files to these other formats:
Convert Your OTS files to other formats
Convert Files to OTS Format
RunConvert.com supports these converters to OTS format:
Convert Files to OTS Format
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Frequently Asked Questions
Here are some common questions and answers about ots file conversions ask by our users on RunConvert.com.
Frequently Asked Questions
Q: Can I convert a spreadsheet to use in a mobile app?
A: Yes! Many mobile apps work well with CSV, XLSX, or even JSON if you’re importing data programmatically.
Q: Can I remove empty columns before converting?
A: You’ll need to do that manually before uploading. We’re planning to add a cleanup tool in the future!
Q: Can I convert scanned spreadsheets?
A: Not directly. Scanned files are usually images or PDFs, so you’d need OCR (optical character recognition) first—then convert.
Q: What happens to merged cells during conversion?
A: Merged cells usually keep their formatting in XLSX and ODS. In CSV though? They’ll get split into separate cells.
Q: Why do some numbers change when I open a converted file?
A: Sometimes Excel auto-formats things weirdly—like turning long numbers into scientific notation. Try formatting cells as text before converting.
Q: Do hyperlinks survive spreadsheet conversion?
A: Yes, if you’re using formats like XLSX or ODS. In PDFs, they often still work. In CSVs though, you’ll just see plain text URLs.
Q: Why is my date format changing during conversion?
A: It’s usually a locale issue—some formats use MM/DD/YYYY, others DD/MM/YYYY. Be sure to set your region correctly before saving or converting.
Q: Is there a difference between .xls and .xlsx conversion?
A: .XLS is older and bulkier. .XLSX is newer, smaller, and faster. We recommend upgrading during conversion when possible.
Q: Can I convert a spreadsheet into JSON or XML?
A: RunConvert doesn’t support that just yet, but it’s on the roadmap. For now, you can use tools like Excel-to-JSON converters online.
Q: Will frozen panes or headers stay after conversion?
A: Only in XLSX or ODS. PDF will lock the view, but CSV loses frozen rows and columns entirely.
What is OTS (OpenDocument Template Spreadsheet)?
OTS (OpenDocument Template Spreadsheet) is a file format used for creating templates in spreadsheet applications, such as LibreOffice Calc or OpenOffice Calc. It allows users to create predefined spreadsheet structures that can be reused and customized for various tasks.
OTS files store formatting, formulas, and other spreadsheet elements, but unlike regular spreadsheet files, they serve as templates that can be used to generate new documents with the same structure.
How to open OTS?
OTS files can be opened using spreadsheet programs that support the OpenDocument format, such as LibreOffice Calc or OpenOffice Calc.
To open an OTS file, simply double-click the file or open it from within the spreadsheet application. Once opened, you can create new documents based on the template.
OTS is Developed by: OASIS (Organization for the Advancement of Structured Information Standards)
OTS was Released on: 2005
Useful Links for OTS:
How to convert OTS?
You can convert OTS files to other formats, such as XLSX, CSV, or PDF, using spreadsheet applications like LibreOffice Calc or online file converters.
To convert an OTS file, open it in LibreOffice Calc or another supported application and then save it in your desired format. Many online tools also offer easy conversion from OTS to other popular formats.
What is XLSX (Excel Spreadsheet)?
XLSX (Excel Spreadsheet) is a file format used by Microsoft Excel to store spreadsheets. It is a more modern and efficient version of the older XLS format and is based on XML (Extensible Markup Language).
XLSX files can store multiple sheets, data tables, charts, graphs, and more complex data structures. This format is widely used for organizing, analyzing, and visualizing data.
How to open XLSX?
XLSX files can be opened using spreadsheet programs like Microsoft Excel, Google Sheets, LibreOffice Calc, and Apple Numbers. These applications fully support the features of XLSX files, such as multiple sheets, formulas, and charts.
To open XLSX files in Excel or Google Sheets, simply double-click the file or import it directly into the application.
XLSX is Developed by: Microsoft
XLSX was Released on: 2007
Useful Links for XLSX:
How to convert XLSX?
You can convert XLSX files to other formats, such as CSV, PDF, or JSON, using online file converters. Upload the XLSX file and choose the desired output format.
Many spreadsheet applications like Excel also allow saving XLSX files in other formats, enabling cross-platform compatibility.
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