Calculators & Tools

Professional electrical engineering calculators for everyday use

Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's Law

V = I × R

Voltage (V)

Current (I)

Resistance (R)

Power (P)

Formulas:

• V = I × R (Voltage = Current × Resistance)
• I = V ÷ R (Current = Voltage ÷ Resistance)
• R = V ÷ I (Resistance = Voltage ÷ Current)
• P = V × I (Power = Voltage × Current)