XLS to XLSX converter
Turn XLS into XLSX
Send us the XLS you already have and take away a XLSX. Handled on our servers, deleted the moment the job ends.
or drag and drop files here
XLS files • Max 25MB per file • Up to 10 files
Both formats, briefly
XLSIN
XLS is the binary workbook Excel produced up to the 2003 release. Old financial models, exported reports and line of business tools still hand them out. Current spreadsheet apps read the format, though its smaller sheet limits and missing newer features are why most people move the data across.
XLSXOUT
XLSX is the workbook format Excel writes today, built on Open XML. A single file can hold many sheets along with formulas, charts, pivot tables and conditional formatting rules. Choose it when the calculations need to travel with the numbers instead of only the results.
Three steps, start to finish
Add your XLS
Drag it onto the page, or pull it in from your computer, Google Drive or Dropbox.
XLSX is preselected
This page is already set to write XLSX. Switch the target if you change your mind.
Take the XLSX
Grab the result the moment the job clears. Your upload is wiped straight afterwards.