I want to estimate the power of a CMOS inverter circuit. I want to ask that is there any software for simulation purpose to give the power of CMOS inverter. The second problem I have is that when you calculate the dynamic power of CMOS dynamic power = Vdd2*CL*f This dynamic power depends upon the parasitic capacitance . The total parasitic capacitance is equal to sum of internal capacitances of the CMOS + wire + load. I am using 0.12um technology to implement my circuit. My question is about wire capacitance that how to determine the wire capacitance for given technology .