Convert kvm image to Virtualbox image and back

[yobser]

Is it possible to convert kvm image to Virtualbox image and back? Or use one image for two virtualization packages?

[EightBitHustler]

Have you looked into the QEMU tools like qemu-img (http://bellard.org/qemu/qemu-doc.html#SEC19)? I know VirtualBox supports VMWare disk images.

This might also help:
Virtual Machines: .vmdk to .vdi Using Qemu + vditool (http://thedarkmaster.wordpress.com/2007/03/12/vmware-virtual-machine-to-virtual-box-conversion-how-to/)