Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law. Essential tool for electronics and electrical engineering.
Ohm's Law Formulas
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)
Calculator
Tip: Enter any two values to automatically calculate the remaining values. The calculator uses Ohm's Law (V = I × R) and Power formulas (P = V × I).