[en] The uncertainty components in evaluation of absorbed dose in water were reviewed for 2-MeV electron dosimetry based on the on-line electron calibration system, which consists of a total-absorption calorimeter, an electron current density meter and cellulose triacetate film dosimeters. Dose comparison was performed for 2- MeV electrons employing cellulose triacetate and alanine film dosimeters which were independently calibrated for 2-MeV electrons and ⁶⁰Co gamma rays using the calorimeter and the ionizing chamber systems, respectively. Agreement of two different dose evaluations was better than 2.0%(1σ). While combined uncertainties in two different dose evaluations are estimated to be within 3.0%(1σ). Consistency of electron dose evaluation with gamma ray dose evaluation was confirmed from these two values. (author)