Ohm's Law & Power Calculator
Solve the whole electrical picture from any two known values. Enter any two of voltage, current, resistance, or power and the calculator works out the other two using Ohm's law and the power formula.
Enter Any Two
Solved Values
Enter at least two values
Based on V = I × R and P = V × I (DC / resistive loads). For AC circuits with reactive loads, apply the power factor separately.
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