Convert XLSX to OTS Files Online for Free.
Free online tool to convert xlsx 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 XLSX to OTS
Click inside the file drop area to upload your XLSX 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 XLSX files to other formats
RunConvert.com can convert your XLSX files to these other formats:
Convert Your XLSX files to other formats
Convert Files to XLSX Format
RunConvert.com supports these converters to XLSX format:
Convert Files to XLSX Format
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Frequently Asked Questions
Here are some common questions and answers about xlsx file conversions ask by our users on RunConvert.com.
Frequently Asked Questions
Q: Do you support spreadsheet conversions in different languages?
A: Totally. RunConvert handles files with characters from all over the world—whether it's French accents or Japanese kanji. Just use UTF-8 encoding!
Q: Does converting a spreadsheet remove conditional formatting?
A: Depends on the output. XLSX and ODS usually preserve it. But CSV? Nope—it strips everything to plain text.
Q: Why do some formats lose cell formatting?
A: Some file types just don’t support that info. CSV, for example, only stores plain text—no colors, no borders, just the facts.
Q: Does converting spreadsheets affect file size?
A: It can! XLSX files are usually smaller than XLS. CSVs are super light, but lose features. PDFs can be bulky if there’s a lot of formatting or images.
Q: How long does a spreadsheet conversion take?
A: Usually just a few seconds. It depends on your file size and internet speed, but it’s faster than brewing a cup of coffee.
Q: Can I edit my spreadsheet after converting it to PDF?
A: Not really. PDFs aren’t built for editing like spreadsheets are. You can annotate or highlight, but serious edits? You’ll need to go back to the spreadsheet.
Q: What’s the difference between XLS and XLSX?
A: Good question! XLS is the older Excel format, while XLSX is newer, smaller, and more efficient. It’s kind of like upgrading from a flip phone to a smartphone.
Q: Is there a limit on how many times I can convert?
A: No limits for basic use! Convert as many spreadsheets as you want—no strings attached.
Q: Can I use RunConvert to convert spreadsheets for school projects?
A: Yes, it’s perfect for students! Fast, free, and no account needed—ideal for submitting homework in the right format.
Q: Can I use RunConvert to convert spreadsheet files?
A: You sure can! RunConvert.com handles tons of spreadsheet conversions—Excel, CSV, ODS, TSV, and more. Just upload your file, pick your output format, and you're golden.
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.
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 Our Users Say
Don't take our word for it – here's what users think about Runconvert.
Saved me hours of work
I had to convert multiple PDFs to Word for editing. This tool made it so easy and preserved all the formatting perfectly. The batch processing feature is a game changer.
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Professional quality
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Fast and reliable
I've tried many conversion tools but this one is by far the fastest and most reliable. No watermarks, no quality loss, and the interface is so intuitive.
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