A method of weight determination of a load carried by a lifter (1) of a lifting device (2) is based on at least one upward and one downward displacement of the lifter (1) by means of a hydraulic actuator (7). A pressure signal is provided by means of a pressure transducer (24), and a position signal is provided by means of a meter (23). The weight of the load (27) is determined on the basis of the pressure signal (24) and the position signal (23). The position signal is registered as a function of time, an acceleration dependent parameter is determined on the basis of the variation of the position signal, and the weight determination is performed in dependence of said acceleration dependent parameter. Furthermore, a weighing device is disclosed.