[Objective] To clarify and standardize the units of the revised universal soil loss equation (RUSLE), we aim to make RUSLE more useful in China.[Methods] By comparing the studies of RUSLE at home and abroad, we determined the most widely applied and accurate units of RUSLE factors and clarified the conversion coefficient between different units.[Results] The application of RUSLE in China, most of the statistical model established by regional units were converted to international units system by multiplying the conversion factor, and finally obtained the amount of soil erosion in international units. The others were the results of various factors represented by US units system through each factor of the corresponding statistical model calculation, the amount of soil erosion in the international system of units was obtained by multiplied by 224.2. The Joule unit system was widely used in the erosion estimation in China, and there were two area units, namely km² and hm². The unit of soil loss amount A was commonly used by international units as t/ha (t/hm²) or t/km², the rainfall erosivity factor R was (MJ·mm)/(hm²·h·a) or (MJ·mm)/(km²·h·a), the soil erodibility factor K was (t·hm²·h)/(hm²·MJ·mm) or (t·km²·h)/(km²·MJ·mm). The results of calculation methods established in different regions were converted into international units through the corresponding conversion coefficients. The consistency of the unit system of R and K factors was a critical step in the RUSLE application.[Conclusion] The conversion of R and K factors into international units through the corresponding unit conversion coefficient and the unit consistency of the two factors is the important basis for soil erosion assessment.