Abstract—This paper presents a novel inertial electromagnetic micro power generator. The proposed generator utilizes mechanical frequency up-conversion technique to improve the level of power generated in low environmental frequencies in order to make device more efficient. Power transduction is done by means of electromagnetic induction. The generator’s structure consists of two main parts; first part contains of a planar spring with two magnets and a mechanical barrier placed between magnets to up-convert external frequency, and second part is made from four cantilever beams with copper coil deposited on them. The simulation results show 67.4mV and 46.6μW RMS voltage and average power respectively from a single beam by up-converting 75Hz external frequency to 5.9kHz. The total power density gained from four beams is 145.6μW/cm3 with device internal volume of 0.64cm3.