Ohm's Law Calculator
Solve voltage, current, or resistance using Ohm's law.
Result
—Formula
V = I × R; I = V ÷ R; R = V ÷ I.
Worked example
12 V and 6 Ω gives 2 A.
Assumptions
Inputs are treated as ideal numeric values within the stated formula.
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Technical disclaimer
This calculator is for numerical estimation only. It does not provide wire, breaker, protection, electrical-code, or installation recommendations.