Magnetic electrochemistry is reviewed, with emphasis on the physical mechanisms involved. Magnetic fields can be used during electrodeposition to enhance the deposition rate of magnetic or non-magnetic species, and also to induce turbulence. These effects are attributed to field-induced convection which creates a transverse flow that disrupts the depletion layer near the electrode. The morphology of radially grown electrodeposits is especially sensitive to magnetic fields when the Lorentz force interferes with natural convection. Electrodeposition is also useful for preparing ferromagnetic thin films, multilayers and nanowires.