Annotation: The work is dedicated to comparison methods of processing the results of the depth dose distributions measurements to determine the practical range of electrons. The sets of test data were obtained by modeling the depth dose distributions with use Monte Carlo method. The accuracy of the calculation method is determined by the mean square error of processing results the sets of test data. The comparison of computational methods of processing the measurement results was performed in the paper. The result of measurements differs in the sizes of the array of data being processed and types of the functions which are used for approximation the data. Comparison the accuracy methods may leads to selection of computational method for determining the practical range of electrons for computational dosimetry of electron radiation.