This calculator determines the total effective resistance of any number of resistors in a series configuration.

**Series Resistance **Calculator

Enter the resistor values separated by commas.

**Series Resistance Formula**

**R _{total} = R_{1} + R_{2} + R_{3 }+…. + R_{n}**

**Example Calculation**

Consider four resistors in series: 1 Ω, 6 Ω, 15 Ω and 100 Ω. The total effective resistance is 122 Ω.

If you have two resistors – one large and the other small in series, the effective resistance is closer to the larger value. Take for instance,

**1 Ω and 1000 Ω in series. The effective resistance is 1001 ≈ 1000 Ω.**

In the event that the same two resistors are in parallel, the effective resistance is closer to the smaller value.

**1 Ω in parallel with 1000 Ω is 0.999 Ω ≈ 1 Ω.**

**Application**

Used to calculate the total impedance of audio speakers connected in series.

**Related Calculator**

- Total Resistance Calculator – gives the effective resistance for a combination of series and parallel resistors.
- Parallel Resistance Calculator
- Series Capacitance Calculator

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