Convert bum to bmp Online: bum2bmp

You can use Tom's Editor to easily convert images from
Poser Bump Map .BUM to Microsoft Windows bitmap .BMP.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

BUM

Poser Bump Map is an image format with extension BUM.

BMP

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