Parallel Resistor Calculator
Calculate total resistance of resistors in parallel.
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How It Works
Calculate total resistance of resistors in parallel. Enter your values and press Calculate for instant results with a full formula breakdown.
Formula
1/R = 1/R1 + 1/R2 + ...Quick Reference
Common calculations — results you can verify instantly.
Two 100Ω in parallel
(100×100)/200
50Ω
Two 200Ω in parallel
(200×200)/400
100Ω
100Ω + 200Ω parallel
(100×200)/300
66.7Ω
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