Parallel Resistor Calculator
Total resistance in parallel and series.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Parallel resistance
- 59.9768 Ω
- Series resistance
- 790 Ω
- Current (parallel)
- 0.20008 A
- Power dissipated
- 2.4009 W
- Resistors entered
- 3
Quick answer
Parallel resistance is the reciprocal of the sum of reciprocals, and is always lower than the smallest resistor.
1/Rt = 1/R₁ + 1/R₂ + …
How to use the Parallel Resistor Calculator
- 1Enter each resistance in ohms, comma separated.
- 2Add the supply voltage for current and power.
- 3Compare parallel and series totals.
Frequently asked questions
Why is parallel resistance lower?
Extra paths give current more ways to flow, reducing overall opposition.
What about two equal resistors?
Parallel resistance is exactly half of one of them.