XLTX to XLS Converter
Convert your XLTX Excel spreadsheet template into a compatible XLS spreadsheet for Microsoft Excel and office software. Process securely online and download free.
Drop your XLTX files here
Up to 50MB per file.
Files are encrypted and auto-deleted after conversion
How to Convert
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Upload your XLTX files
Drag and drop or select XLTX files from your device. You can upload multiple files at once.
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Configure Output
Start the conversion. Crest Convert will prepare the XLS file using the appropriate format engine.
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Download XLS files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert XLTX to XLS?
XLTX is a modern Microsoft Excel spreadsheet template used for reusable worksheets, consistent cell styles, and structured reports. Converting it to XLS creates the legacy Microsoft Excel workbook format used by older spreadsheet systems, ready for workflows that use the destination format.
XLS opens in Microsoft Excel and office suites that support legacy workbooks.
Frequently Asked Questions
How do I convert XLTX to XLS?
Add your XLTX Excel template, start the conversion, and download an editable XLS spreadsheet ready for Microsoft Excel and compatible office applications.
What is an XLTX Excel template?
XLTX is the modern Microsoft Excel template format used for reusable worksheets, consistent cell formatting, and structured spreadsheet workflows.
What does converting XLTX to XLS do?
The converter reads your XLTX template and creates an editable XLS spreadsheet ready for Microsoft Excel and compatible office applications.
Can I edit the converted XLS spreadsheet?
Yes. The converter creates a genuine XLS spreadsheet with supported worksheet content, cell values, and structure ready for compatible apps.
Can I convert several XLTX templates?
Yes. Add multiple XLTX files and download a separate XLS result for each spreadsheet.
Is XLTX to XLS conversion secure?
Yes. Spreadsheets are transferred over an encrypted connection, processed securely, and automatically removed after conversion. No account is required.