How this calculator works
Enter the values for first value, second value and review the units before calculating.
Formula / method
1 ÷ Req = Σ(1 ÷ Ri)
Worked example
100 Ω and 100 Ω in parallel produce 50 Ω.
Assumptions and limitations
Every resistor is positive and connected across the same two nodes.
Wiring, tolerance, thermal limits and current sharing are not modeled.