Convert XLSX to XLS — Free
Upload your XLSX file and get a XLS in seconds. No account, no watermark.
How to convert XLSX to XLS
Need to convert your XLSX files to the older XLS format? BoltConverter provides a fast and free online tool for this task. Our service helps you transform modern Excel spreadsheets into a widely compatible format without needing any software installation.
Simply upload your XLSX file, and BoltConverter will process it on our secure servers. Your converted XLS file will be ready for download quickly. We ensure your privacy by deleting all files immediately after conversion is complete.
Upload Your XLSX File
Click the 'Choose File' button to select the XLSX file from your device.
Start Conversion
Press the 'Convert' button to begin the XLSX to XLS conversion process.
Wait for Processing
Allow a few moments for BoltConverter to process your file on our servers.
Download XLS File
Once converted, click the 'Download' button to save your new XLS file.
Frequently asked questions
Is BoltConverter free to use?
Yes, BoltConverter is completely free for all XLSX to XLS file conversions.
How long are my files stored on your servers?
All uploaded and converted files are automatically deleted from our servers immediately after the conversion is finished.
Is there a file size limit for conversions?
Yes, you can convert XLSX files up to 100 MB in size using BoltConverter.
What about the quality of the converted XLS file?
BoltConverter strives to maintain the original formatting and data integrity during the conversion from XLSX to XLS.
Can I convert multiple XLSX files at once?
No, BoltConverter currently supports converting one XLSX file to XLS at a time.