Ohm's Law Calculator
Enter any two values to calculate the others.
Results
Voltage (V)
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Current (I)
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Resistance (R)
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Power (P)
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Ohm's Law Formulas
Ohm's Law describes the relationship between Voltage, Current, and Resistance.
- V = I × R (Voltage = Current × Resistance)
- I = V / R (Current = Voltage / Resistance)
- R = V / I (Resistance = Voltage / Current)
- P = V × I (Power = Voltage × Current)