The paper analyzes the differences in carrying out compression tests in accordance with the regulatory documents of Russia and Germany and subsequent processing of the obtained data. The paper gives the reasons for significant differences in the values of compression and design deformation moduli obtained from the compression test data in accordance with Russian and German National Building Codes. Approximate differences of the above-mentioned moduli have been revealed for various types of soil. The transition coefficients have been calculated for the compression and design moduli obtained from the compression test data in accordance with Russian and German National Building Codes. The paper describes the applicability of these transition coefficients. The paper presents the research results carried out within the framework of international cooperation of two universities: Industrial University of Tyumen (Russia) and Beuth University of Applied Sciences, Berlin (Germany). The results of the research prove the correctness of the calculated transition coefficients.