How long should your foot be swollen after rolling your ankle?

Depends on injury: Swelling may last a long time following a an injury. An x-ray can show if there is an underlying fracture. You may have a soft tissue injury if it is just a sprain and may have damaged the muscle, tendon, or ligaments in the area. Have it evaluated by a professional and get the appropriate treatment.

Swollen ankle: Usually most swelling resolves in a few weeks but some residual swelling can last several weeks up to a couple of months.

Depends on severity: Of sprain to determine swelling. Elevation will help get rid of it and compression as well.