Abstract: A convertible couch, particularly for use in vans and other recreational or leisure vehicles, includes a seat and a back hinged relative to one another, and a pair of side supports having multiple supporting surfaces arranged to engage and support the seat and back in plural positions of the seat and back. The arrangement of the supporting surfaces is such that the seat and back are firmly held in position without requiring the use of separate fasteners or linkages and the like and thus, the convertible couch is both economical to make and safe to use in moving vehicles. Additionally, the arrangement of the supporting surfaces and their cooperation with the seat and the back is such that a balance is achieved which renders the convertible couch easy to manipulate in its movements from a couch position to a bed position and vice versa.