Conversion of xlk files to xls file format

It seems that the only software that can reliably recover .xlk file would be MS Excel, the very program that generated the backup in first place. Once the data are recovered, the spreadsheet can be saved to any of the available formats, including the standard XLS format, which will essentially achieve xlk to xls conversion.

Open XLK file    Open XLS file

Related software

Microsoft Excel icon

Microsoft Excel

A popular spreadsheet application distributed with Microsoft Office suite

Microsoft Excel for Mac icon

Microsoft Excel for Mac

A popular spreadsheet application from the Microsoft Office suite