Convert bmp to cm Online: bmp2cm

You can use Tom's Editor to easily convert images from
Microsoft Windows bitmap .BMP to Puzzle image from X11 .CM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

BMP

Format created by Microsoft for their Windows and OS/2 operating systems. Images can be compressed or not.

CM

Puzzle image from X11 is an image format with extension CM.