Abstract: A convertible bench seat or bed for vans and other vehicles constructed and arranged to be readily mounted between a storage position and an operative position without displacing the bench seat. The bench seat of this invention is pivoted about a first vertical axis and comprises a seat portion pivoted relative to a back portion of the seat. Means are provided for securing the convertible bench seat in its seat storage position without requiring a great deal of time-consuming labor. Similarly, a minimum amount of labor is required to lock the seat in its operative position in sufficiently spaced relation behind permanent front seats of the vehicle.