According to the present invention, a convertible footwear apparatus can be worn as a shoe or converted to a boot by attaching or removing an upper section from the shoe. The apparatus is configured to allow someone wearing the shoe component to attach or remove the upper section with a single continuous operation and without having to remove the shoe component from the wearer's foot. In one embodiment of the invention, the apparatus comprises a zipper. In another embodiment of the invention, the shoe component includes a heel.