Convert jp2k to bmp Online: jp2k2bmp

You can use Tom's Editor to easily convert images from
JPEG 2000 .JP2K to Microsoft Windows bitmap .BMP.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

JP2K

JPEG 2000 is an image format with extension JP2K.

BMP

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