The aim of the work is to select the technological parameters necessary to obtain microarc oxide coatings with desired properties. The objectives of the study are: modeling the properties of coatings from the technological parameters of the process of their formation and assessing the error of modeling adequacy. For this, regression analysis methods, interpolation and approximation of functions were used. Mathematical expressions are proposed for calculating the specified coating parameters depending on the current density and the duration of the microarc oxidation process. The initial data were the results of measurements of coating parameters obtained at current densities of 8, 10, 12 A/dm2 for 180 minutes in a silicate-alkaline electrolyte, the thickness, microhardness and porosity of which lie in the range: thickness from 0 to 180 цап; porosity from 4 to 44 % and microhardness from 7 to 10 HV. It is shown that the simulation results are in good agreement with the experimental data, while the relative adequacy error does not exceed 15 %. The results obtained can be used in scientific research in the development of a digital twin of the microarc oxidation process and in industry for testing the technology of coating light alloys.