Enter the resistance of up to 5 resistors in series into the calculator. The calculator will evaluate and display the equivalent resistance.

Series Resistance Formula

The following equation is used to calculate the equivalent resistance of a set of resistors in series.

R = r1 + r2 + r3 … rx

  • Where R is the equivalent resistance
  • r1,r2, etc are the individual resistances of the components in series.

Series Resistance Definition

Series resistance is defined as 2 or more components in a circuit that have resistance and are aligned in series.

Series Resistance Example

How to calculate series resistance?

  1. First, determine the individual resistances.

    Measure the individual resistances of each component.

  2. Next, determine the equivalent resistance.

    Sum all of the resistances together to yield the equivalent resistance.


What is a resistance?

A resistance is a force against the flow of electricity. In other words, electronic components resist the flow of electricity.

What is a series?

A series is a type of electrical setup that has components in sequential order connected by one wire.