In this paper, a new current mode true RMS-to-DC converter circuit using second generation current conveyors (CCII) is presented. The proposed methodology provides the following advantages: a complete current-mode circuit makes it suitable for current-mode signal processing applications; modular design of the converter is achieved by using of CCIIs as the basic building block; and using of CCII that is active building blocks of the converter features low voltage supply and low circuit complexity, which lead to low voltage applications. Hspice simulation results shows high performance of the converter and validate the workability of the proposed circuit.