Resistors in Parallel Calculator Resistors in Parallel Calculator Resistors in Parallel Calculator Calculate Equivalent Resistance Resistor 1 (Ω) Resistor 2 (Ω) Add Resistor Remove Resistor Calculate This calculator computes the equivalent resistance of resistors connected in parallel. The formula for equivalent resistance (Req) of resistors in parallel is: 1/Req = 1/R1 + 1/R2 + ... + 1/Rn Example Calculation If you have three resistors with values of 10Ω, 20Ω, and 30Ω connected in parallel, the equivalent resistance is: 1/Req = 1/10 + 1/20 + 1/30 Req = 5.45Ω Subscribe to Updates Get the latest creative news from SmartMag about art & design.