Reversible Logic Gates are a class of logic gates that perform operations at which data can be returned to the input states from the output states without any loss. In traditional logic gates, information loss can occur, but reversible logic gates ensure no data is lost while performing operations. This characteristic makes them essential for quantum computing and low-power circuit designs, as they theoretically produce zero energy loss during computation. The design and operation of the Ripple carry adder (RCA), Parity Generator, and comparison of the 4-Bit and 8-Bit RCA’s utilizing logic gates that are reversible such as the Feynman, Peres, and HNG gates are presented in this paper. The comparative results show that the implementation of 4-Bit RCA using HNG gate have shown reduction of 45.45% in area and 10.16% in delay when compared to the 4-Bit RCA using Peres gate. Power remains unchanged for both 4-Bit RCA using HNG and Peres gates. The implementation of 8-Bit RCA using HNG gate have shown reduction of 45.45% in area and 12.19% in delay when compared to the 8-Bit RCA using Peres gate. Power remains unchanged for both 8-Bit RCA using HNG and Peres gates. For the simulation of digital designs, we used Modelsim and for the synthesis, we used Xilinx ISE.