An inch-lb is a force of 1lb acting on a lever at a point 1 inch from the fulcrum (the bolt in this case). Thus 12 inch-lbs is 1lb acting 12 inches from the bolt, which is the same as 1lb acting 1 foot from the bolt. As long as the force unit doesn't change, you can change the distance to any unit you normally would (but a metre-lb is a useless unit. Best stick to all metric or all imperial).