Both .jpg and .jpe files are JPEGs, some programs just use some of the less know extensions for it. This may confuse some users, but you can safely rename .jpg to .jpe should you need it, no conversion required although you can use some graphics editors to re-save your picture. But in this case this would also just rename the extension only as both .jpg and .jpe are fundamentally the same.
Convert JPEG bitmap image format to JPEG bitmap image format file.
We found 2 software records in the database related to .jpg to .jpe file format conversion.
Microsoft Windows software - convert jpg to jpe on Windows
A complete image retouching program
Convert from jpg file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned jpg to jpe. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Multiplatform software - convert jpg to jpe on any platform
A popular utility for viewing and converting graphic files