KLOORAResistors in Series and Parallel Calculator
Add up to four resistors in series or parallel and get the total resistance.
Quick answer: Resistors in Series and Parallel Calculator: Add up to four resistors in series or parallel and get the total resistance. Everything runs in your browser, so nothing you enter is uploaded or stored.
How to use Resistors in Series and Parallel Calculator
- Enter your values in the fields.
- The results update instantly as you type.
- Note or copy the numbers you need.
Features
- Instant results
- Free, no signup
- Runs in your browser, nothing is uploaded
- Works on phone and desktop
Formula
Series: R = R1 + R2 + ... Parallel: 1/R = 1/R1 + 1/R2 + ...
Worked example
Two resistors of 100 and 220 ohms give 320 ohms in series and about 68.75 ohms in parallel.
Frequently asked questions
What is the series formula?
Total R = R1 + R2 + R3 + R4.
What is the parallel formula?
1 / R = 1 / R1 + 1 / R2 + 1 / R3 + 1 / R4.
Is the Resistors in Series and Parallel Calculator free?
Yes. It is free, needs no signup and works on any device.