Ohms Law Calculator
Calculate voltage, current, resistance, and power using Ohms Law.
Enter any two values to calculate the remaining two.
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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Enter at least 2 values to see results
Formulas: V = IR | P = VI | R = V/I | I = V/R | P = I²R | P = V²/R
Green values are calculated. Blue values were entered.