To remove calluses from your heels take some warm water and add some baking soda to the warm water and soak your feet in the baking soda and water foot bath for 15 to 30 minutes.
The baking soda and warm water will help to break down the dead skin cells and soften your calluses which will make the calluses much easier to remove.
Epsom salt also works in a foot bath to help soften the calluses so they can be removed much easier.
After soaking your feet in the foot bath take a pumice stone and then use it on the calluses and the calluses should easily come off your heels.