In order to create a 3D picture in stereoscopic JPEG format (.jps), you will need a special program such as StereoMerger that gives users the means to turn their pictures to 3D. Both .mpo (CIPA) and .jps files are used for 3D pictures, so you may not even need a conversion at all, just resave one file to another.
Convert CIPA Multi-Picture format to Stereoscopic JPEG format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert mpo to jps on Windows
A 3D-photo viewer, editor and batch processor
Convert from mpo file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.