Convert bum to psd Online: bum2psd

You can use Tom's Editor to easily convert images from
Poser Bump Map .BUM to Adobe Photoshop .PSD.
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.

PSD

PSD is in internal image format of Adobe Photoshop. It can store all the features offered by Photoshop, like layers and paths. Images can be compressed or not.