slddrw to stl conversion is often searched in the context of exporting SolidWorks content to a format suitable for simple 3D printing, such as STL format.
Due to the proprietary nature of SolidWorks' formats, your options will always be limited to the original tool as well as dedicated 3D model converters. We do not know about any simple utility that can be used for the export of a SolidWorks file to STL format.