Convert from XLS (Microsoft Office Excel 97-2003) to XLSX (Microsoft Office Excel)

Drop files here or click to upload

Our online XLS to XLSX converter enables you to seamlessly change Microsoft Excel file format. Convert XLS file to XLSX right in the browser, no registration required. It does not matter which platform (Windows, Mac, etc.) you use, because this tool works on all of them. The conversion service is completely free and there are no usage limits.

Information on how to use this tool:

  1. Drop your files onto the area above or click it to upload, icons with the names of your files will appear in the area. Allowed file formats: XLS.
  2. Wait for all the files to upload, the "Convert" button will show up below the icons.
  3. Click the "Convert" button, a message will appear indicating that your files are being processed.
  4. Wait for the processing to complete, the waiting time usually varies between a few seconds and a few minutes.
  5. To download the processed files, you can click on the icon of each file individually or click the button below the icons to download all the files as a ZIP archive.