How do i get rid of calluses on my feet from wearing ill fitting shoes?

Use a pumice stone: You can use a pumice stone or an emery board if you are not diabetic and you have good circulation.

Podiatry visit: Calluses are largely dependent on the shape of your foot and the way you walk; the type of shoes you wear also play a role. I would suggest having your feet evaluated by a Podiatrist; you may be a good candidate for custom orthotics. Regular visits to a Podiatrist-run foot spa, may also be beneficial to you