Open the picture in a program that can recognise both bitmap and jpeg (eg paint, photoshop, Lightroom)
Select Save As and change the file type to jpeg.
Should work.
How do i change a picture which is in bitmap format to a jpeg format?
depends on the software you're using...
How do i change a picture which is in bitmap format to a jpeg format?
just open it, then change the type when you save as....
