Abstract: This invention relates to an endless conveyor belt load measurement system and a method of automatically calibrating the same using a digital computer. Measuring means are provided to measure movement of the conveyor belt and scale means are provided to measure the weight of successive portions of the conveyor belt and the load carried thereby both having digital pulse output signals which are communicated to digital computer means. Means are provided to temporarily apply a selected number of calibration weights to the scale means while the conveyor belt is rotating empty. The computer means calculates average output signals received from the scale means during complete revolutions of the empty conveyor belt with varying members of the calibration weights applied to the scale means and substitutes these in a set of curve fitting linear equations to calculate a set of linearization coefficients.