Convert XLS to XLSX

Use Fylovo to convert XLS files to XLSX online. Choose your file, confirm XLSX as the output format, and download the converted result.

How to convert XLS to XLSX

1. Choose a XLS file from your device.
2. Select XLSX as the output format.
3. Convert and download your result.

XLS to XLSX converter FAQ

Is this XLS to XLSX converter free?

Yes. Fylovo lets you convert supported files without creating an account.

Are my files kept private?

Files are processed outside the public website and are automatically deleted after processing.

Will every file convert identically?

Results can vary because file formats support different features, layout, quality, and metadata.

Maximum upload size: 100 MB. Use only files you have permission to convert.