Converting Excel files can be easy or problematic, depending on the underlying complexity of the workbooks to be converted - whether they contain macro code, are in a legacy format, are password protected, contain broken external connections, as well as other unforeseen file glitches. Optional pre-conversion workbook analysis. Most importantly, conversions are performed natively - converting to a Microsoft file from within a Microsoft product. It allows you to perform any file conversion or file upgrade that Excel would normally be capable of doing, but in a fully automated batch process. Excel Converter is an application written in macro coding within a Microsoft Office Excel workbook. Batch convert thousands of Excel files in minutes.