Convert XLS to OTS Files Online for Free.
Free online tool to convert xls to ots 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 XLS to OTS
Click inside the file drop area to upload your XLS file or drag & drop it.
Select OTS as the output format and click the 'Convert' button.
Download the converted OTS file instantly after conversion.
You can also send a link to the converted file via email. (Optional)
Convert Your XLS files to other formats
RunConvert.com can convert your XLS files to these other formats:
Convert Your XLS files to other formats
Convert Files to XLS Format
RunConvert.com supports these converters to XLS format:
Convert Files to XLS Format
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Frequently Asked Questions
Here are some common questions and answers about xls file conversions ask by our users on RunConvert.com.
Frequently Asked Questions
Q: Is spreadsheet conversion free on RunConvert?
A: Totally free. No hidden fees or credit cards—just a clean, simple conversion experience.
Q: Can I convert Excel macros too?
A: Short answer: not really. Most formats don’t support macros. So if you rely on those sweet VBA scripts, keep the file in Excel format.
Q: Why does my CSV look weird in Excel?
A: Ah, the classic comma confusion. Sometimes Excel misreads delimiters—especially if your system uses semicolons instead. Try importing the CSV using Excel's 'Data > From Text' feature and set the correct separator.
Q: Can I convert a spreadsheet into a presentation format like PPT?
A: Not directly. You’d need to export data as images or copy tables manually into slides for now.
Q: Why are empty rows showing up in my converted file?
A: Your original file may have hidden rows or formatting. Try cleaning it up first before converting.
Q: How do I know if the converted file is accurate?
A: We recommend opening and scanning the result before sharing. Most conversions are spot-on, but it’s good to double-check!
Q: What’s a TSV file, and how’s it different from CSV?
A: TSV stands for Tab-Separated Values, while CSV uses commas. They’re pretty similar—just different flavors of the same idea: plain text tables.
Q: Will colors and fonts transfer in my spreadsheet conversion?
A: That depends on the format. Excel to Excel? You’re good. But converting to CSV? Say goodbye to colors, fonts, and anything fancy—it’s just plain text there.
Q: Can I preview the file before downloading the converted version?
A: On RunConvert, we’re working on adding that feature. For now, just download it—it’s super quick, and if it’s not right, you can tweak and reupload.
Q: Can I convert XLSX to CSV?
A: Absolutely! XLSX to CSV is one of the most common conversions. Whether you're prepping data for coding or uploading it into a platform, a CSV keeps things clean and simple.
What is XLS (Excel Spreadsheet)?
XLS (Excel Spreadsheet) is a proprietary file format developed by Microsoft for storing spreadsheet data, including rows, columns, and data cells. The format supports complex data like formulas, charts, and formatting.
XLS files are widely used for business, academic, and personal tasks requiring advanced data analysis, visualization, and reporting.
How to open XLS?
XLS files can be opened using spreadsheet programs like Microsoft Excel, LibreOffice Calc, or Google Sheets. These programs display data in a tabular format, preserving the cell structures, formulas, and formatting.
To open XLS files in Excel or Google Sheets, simply double-click the file or import it into the application.
XLS is Developed by: Microsoft
XLS was Released on: 1985
Useful Links for XLS:
How to convert XLS?
You can convert XLS files to other formats, such as CSV, JSON, or PDF, using online file converters or within spreadsheet programs. Simply upload your XLS file and select the desired output format.
In Microsoft Excel or LibreOffice, you can also save your XLS files in various other formats, like CSV or PDF, for compatibility with different applications.
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.
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