Ohm's Law Calculator
Please provide any 2 values and click "Calculate" to get the other values in the ohm's law equations V = I × R and P = V × I.
About Ohm's Law
Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
Basic Formulas:
- • V = I × R (Voltage = Current × Resistance)
- • I = V / R (Current = Voltage / Resistance)
- • R = V / I (Resistance = Voltage / Current)
Power Formulas:
- • P = V × I (Power = Voltage × Current)
- • P = I² × R (Power = Current² × Resistance)
- • P = V² / R (Power = Voltage² / Resistance)
This calculator helps you quickly determine any two unknown values when you provide the other two values from the Ohm's Law and power equations.