XLS to XLSX Converter
Convert XLS to XLSX online, for free.
- From Device
- From Dropbox
- From Google Drive
- From OneDrive
- From Url
How to Convert XLS to XLSX?
- Click the “Choose Files” button to select your XLS files.
- Click the “Convert to XLSX” button to start the conversion.
- When the status change to “Done” click the “Download XLSX” button
Easy to Use
Simply upload your XLS files and click the convert button. You can also batch convert XLS to XLSX format.
Best Quality
We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).
Free & Secure
Our XLS to XLSX Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically delete after a few hours.
FreeConvert.com can convert your other files to XLSX format:
FreeConvert.com can convert your XLS files to these other formats:
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