Convert XLTX to XLSX Files Online for Free.
Free online tool to convert xltx 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 XLTX to XLSX
Click inside the file drop area to upload your XLTX 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 XLTX files to other formats
RunConvert.com can convert your XLTX files to these other formats:
Convert Your XLTX files to other formats
Convert Files to XLTX Format
RunConvert.com supports these converters to XLTX format:
Convert Files to XLTX Format
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Frequently Asked Questions
Here are some common questions and answers about xltx file conversions ask by our users on RunConvert.com.
Frequently Asked Questions
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: Are converted files virus-free?
A: Absolutely. We don’t add anything to your files—just convert them. Always scan downloads if you’re extra cautious though!
Q: Is spreadsheet conversion free on RunConvert?
A: Yes! Most conversions on RunConvert are totally free. We believe useful tools shouldn’t cost an arm and a leg.
Q: Can I upload a file from a URL for conversion?
A: Not yet, but we’re exploring this feature. For now, you’ll need to download it and upload from your device.
Q: Can I convert CSV files with semicolons instead of commas?
A: Yes! Our converter auto-detects separators. But if it doesn’t, just tweak the input settings when uploading.
Q: Why are some formulas broken after converting?
A: Not all formats use the same formula syntax. Stick to XLSX or ODS for the best compatibility.
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: What is spreadsheet file conversion?
A: It's basically changing one spreadsheet format into another—like turning an Excel file (.xlsx) into a CSV, PDF, or Google Sheets. Think of it like translating a document into another language, but for software.
Q: What’s the safest format to share with non-tech users?
A: PDF is the safest—it's readable, uneditable, and works on almost every device without special software.
Q: Can I convert a spreadsheet into an image?
A: RunConvert doesn't do images yet, but you can convert to PDF and then screenshot or use a PDF-to-image tool.
What is XLTX (Excel Template)?
XLTX (Excel Template) is a file format used by Microsoft Excel to store spreadsheet templates. These templates can include predefined formatting, formulas, and layouts, making it easier to create consistent and professional-looking spreadsheets.
XLTX files are commonly used in business environments for creating standardized financial reports, invoices, and other recurring documents.
How to open XLTX?
XLTX files can be opened using Microsoft Excel or other spreadsheet software that supports the format, such as LibreOffice Calc or Google Sheets.
For editing, you can use Microsoft Excel or any other compatible spreadsheet software to modify the template as needed.
XLTX is Developed by: Microsoft
XLTX was Released on: 2007
Useful Links for XLTX:
How to convert XLTX?
To convert XLTX files to other formats like XLSX or CSV, use our online spreadsheet converter. Upload your XLTX file, select the desired output format, and start the conversion.
Our converter ensures high-quality conversion, preserving the original template layout and data for seamless use across various platforms.
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 Our Users Say
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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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As a graphic designer, I need reliable conversion tools. This site delivers professional quality every time. The image conversions maintain resolution and color accuracy.
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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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