from the Load and Save in the docs there:
Exporting Files (Mesh Formats: .dae, .mhx, .fbx, obj, Ogre3D, .MD5, .stl)
Files are Exported using either the Quick Export icon or by directly choosing the File tab and the Export subtab.
The Export window allows you to export your current MakeHuman project to one of a variety of export formats. Supported formats including Collada (DAE), Blender exchange (mhx), Filbox (fbx), Wavefront (obj), Id Software (MD5), and Sterolithography (stl). By default, exported files (regardless of export format) are saved to the user directory %HOMEPATH%/Documents/makehuman/v1/exports/. As is true for the load and save tabs, the ellipsis can be used to export to a non-standard directory/folder. After selecting a format and export options, type the name of your project in the input box at the center of the Export window and then click the Export button at the right hand side of the input box.
MakeHuman, itself, can not read any of the exported formats, so exporting is a one way transfer of information. If you expect to do further refinement of your model, make sure you also save it in .mhm format.
