XLS to XLSX Converter
(Free, High-Quality)

Convert XLS to XLSX. Fast, secure, and free.
Drag & drop files hereor click to browse Supports PDF, PNG, JPEG, WebP, and more. Upload multiple files at once.
Device
Dropbox
Google Drive
Url

Other XLS Conversions

XLS to CSVConvert XLS files to CSV format
XLS to DBFConvert XLS files to DBF format
XLS to DIFConvert XLS files to DIF format
XLS to FODSConvert XLS files to FODS format