The invention relates to a modular oven for food products, the oven including a conveyor device for entraining the products from an inlet to an outlet of the oven, and comprising in cascade at least two, and preferably three, individual modules, each individual module presenting: a ceiling of adjustable height that presents first air and/or steam injection means for generating forced convection; a floor of adjustable height that presents second air and/or steam injection means for generating forced convection; floor burners for baking by convection, which burners are disposed between the floor and the conveyor device and are adjustable vertical position; and ceiling burners for baking by radiation, which burners are disposed between the conveyor device and the ceiling, and are adjustable in vertical position.