Xlsx Xlsm to Xls Converter 3000 is a useful application for converting your spreadsheet documents from XLSX or XLSM to XLS. This tool can convert your Microsoft Excel 2007 (and later) documents to the old XLS format and maintains complete compatibility with previous spreadsheet software versions. Imagine that your boss sent you an Excel document and when you open it you realize your Microsoft Excel version is not compatible with the XLSX version of the document. Xlsx Xlsm to Xls Converter 3000 can solve the problem by converting your spreadsheet file format to one that you can use. It has a simple interface that allows you to convert files in no time at all. Xlsx Xlsm to Xls Converter 3000 enables you to convert a folder full of XLSX or XLSM Excel files to XLS in one single process by means of batch mode. We guarantee fast conversion and excellent quality files. Xlsx Xlsm to Xls Converter 3000 is the best option for converting your spreadsheet files from one format to another.