Series Resistance
Use the Series Resistance. Enter Resistance 1 (Ω) and Resistance 2 (Ω) for a clear result, formula explanation, and practical planning checks.
Series Resistance measurements
Enter your values, then calculate.
Result
How to calculate series resistance
This calculator finds total resistance in a series circuit by adding up the individual resistances.
How the calculation works
Total resistance = R1 + R2 + R3.
Example
Resistors of 100Ω, 220Ω, and 330Ω in series: 100+220+330 = 650Ω.
Frequently asked questions
How is Result calculated?
Result = [Resistance 1] + [Resistance 2] + [Resistance 3].
Is the Series Resistance free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Series Resistance
Total resistance = R1 + R2 + R3.
Let's understand your series resistance result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Series Resistance
- In a series circuit, resistances simply add together — this is much simpler than parallel resistance, which requires the reciprocal formula.
- Total series resistance is always greater than any individual resistor's value, unlike parallel circuits where combined resistance is always less than the smallest individual value.
Common Series Resistance Mistakes to Avoid
- Applying the parallel resistance formula (reciprocal sum) to resistors that are actually wired in series, where simple addition is the correct approach.
When to Use This Calculator
This calculator finds total resistance in a series circuit by adding up the individual resistances.