Convert XLS to XLSX
Convert XLS to XLSX format with the best free online tool that offers premium service for all users. With unlimited daily conversions of XLS to XLSX spreadsheet format, you’ll convert all your files in no time.
How to convert the XLS to XLSX format?
XLS converter has a user-friendly interface that supports the simple conversion process of your files. In just three steps, you can convert all your XLS files.
First, add your XLS file with the Add files button. Also, you can add a link to your files with Add from URL button.
Press on the Start conversion button to begin the conversion process.
In just a few moments, you will get the download link for your converted XLSX spreadsheet file.
Convert XLS to other supported formats
XLS TO CSV, XLS TO ET, XLS TO NUMBERS, XLS TO ODS, XLS TO SDC, XLS TO XLSM, XLS TO XLSX and XLS TO XLS.
Convert XLSX to other supported formats
XLSX TO CSV, XLSX TO ET, XLSX TO NUMBERS, XLSX TO ODS, XLSX TO SDC, XLSX TO XLS, XLSX TO XLSM and XLSX TO XLSX.