An extender device having a base frame with two ends. There is at least one extendable arm that extends from one of the ends of the base frame that allows the bed extender to move from a retracted to an extended position. The length of the bed extender can be set by a locking mechanism located on the base frame that can be used to lock the extendable arm in position. The bed extender can be used to divide a storage compartment or it can be used to extend the length of the pick-up truck bed by using the extendable arms and a pivot mechanism connected to the extendable arms.