Formula & method
1/Rtotal = Σ(1/Ri)
Worked example
100 Ω || 100 Ω = 50 Ω
Assumptions & safety boundary
Mathematical estimate only. Verify equipment datasheets, manufacturer instructions, electrical codes and qualified design before real-world use.
Ohm's Law & Resistance
Parallel Resistor Calculator
Parallel Resistor Calculator. Ohm’s law and resistor-network calculations for common electronics work. Calculations run in your browser. Entered electrical values are not uploaded to our server.
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Calculations run in your browser. Entered electrical values are not uploaded to our server.