Abstract: Container capacity control system, which is comprised of a first horizontal linear guide (3) where there is a clamp head (13), which can move horizontally and rotate on the horizontal plane and which holds a first clamp (1) and a second clamp (2) for the input and output of an empty container (b1) respectively; a second horizontal linear guide (4) where means for the total filling or predetermined partial filling move; some weighing scales (5), which weigh the container (b1) empty and totally full or partially full with the predetermined amount, sending the weight data to a microprocessor, which controls the programmed system, so that it distinguishes between full-to-the-brim containers and containers partially filled, calculating the capacity based on the weighing data.