Total Resistance Calculator – Series and Parallel Combination

This tool calculates the total resistance of a series and parallel combination of resistor values.

Enter the series and parallel resistor values in two separate input fields separated by commas.

Series and Parallel Resistance Combination Formula

Rparallel = (1/R1 + 1/R2 + 1/R3 +…. + 1/Rn)-1

Rseries = R1 + R2 + R3 +…. + Rn

Rtotal = Rparallel + Rseries

Example Calculation

Consider three resistors in parallel: 1 Ω, 3 Ω, and 5 Ω and two resistors in series: 1 Ω and 2 Ω

The total parallel resistance Rparallel = 0.652 Ω

The total series resistance Rseries = 3 Ω

The total effective resistance Rtotal = 3.652 Ω

Related Calculators

  • Series Resistance Calculator
  • Parallel Resistance Calculator

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