The paper presents a comparison of different methods of calculation of nitrogen solubility in steel 10Kh14AG15. A comparison of Wagner, Chimpan, and Corrigan methods, calculations by V.I. Lakomsky with co-authors, analytical and experimental material of J. Pitkala with co-authors, etc, was made. Obtained calculation data of nitrogen solubility in steel 10Kh14AG15 in the temperature range of 1873…2300 K showed the smallest discrepancy between Chimpan and Corrigan and V.I. Lakomsky methods and the smallest discrepancy of experimentally determined nitrogen solubility in steel 10Kh14AG15 at 1923 K with the data derived by V.I. Lakomsky at PWI. At technological calculations for melting steel 10Kh14AG15 it is recommended to maintain the pressure of 0.3…0.7 atm in the system.