The present invention relates to an RF dosimeter for estimating a specific absorption rate (SAR). The RF dosimeter includes an electric circuit including a thermistor. A coil loop is connected to one end of the electric circuit. A multi-meter is connected to the other end of the electric circuit. So, the RF dosimeter can easily measure a SAR level from a human torso phantom.COPYRIGHT KIPO 2017본 발명은 SAR(Specific Absorption Rate)를 추정하기 위한 RF dosimeter로서, RF dosimeter는 써미스터를 포함하는 전기회로와, 상기 전기회로의 일단에는 코일 루프(Coil loop)가 연결되고, 타단에는 멀티 미터(Multi-meter)가 연결되어 구성된다.