A leg press attachment which is configured to be engaged with a squat rack, and thereafter used to perform many different exercises. The leg press attachment is engageable with hooks on the squat rack such that the leg press attachment pivots during use relative to the squat rack yet includes at least one stop for limiting the extent of its pivoting relative to the squat rack. Preferably, the device can be removed from the hooks and engaged directly with the squat rack, during which time the at least one stop secures the device relative to the squat rack. Preferably, the leg press attachment is also configured such that it can be removed from squat rack, and converted to a sled for pushing along the floor.