Within the framework of Project 11.008 a numerical method was developed and implemented for the calculation of induced electric fields inside the human body in the frequency range 10 Hz up to 30 MHz. The numerical method is based on IMST"s commercially available field-simulator EMPIRETM, which employs the Finite Difference Time Domain (FDTD) method. Special algorithms have been added in order to calculate the induced low-frequency fields inside the human body field more effectively. The commercially available CAD-tool AutoCAD® was used as a graphical user interface for the preparation of numerical models as well as for the visual representation of the simulation results. The software comprises an inhomogenous model of the human body with a spatial resolution of 0.5 cm. The model is based on data from the Visible Human project of the National Library of Medicine. Furthermore a parametric model of the frequency-dependent dielectric properties of relevant biological tissues was included into the user interface. The implemented method is suitable for studies on electromagnetic field exposure in special workplaces as well as for more general investigations, e. g. examination of quantitative relations between external electromagnetic field distributions and induced fields inside the human body. Finally both aspects of the software are demonstrated for practical applications.