Ohm's Law Calculator
Calculate Voltage (V), Current (I), Resistance (R), and Power (P) using Ohm's Law.
V = I × R | P = V × I
Results
⚡
Voltage
12.0000
V
🔌
Current
4.0000
A
🔧
Resistance
3.0000
Ω
💡
Power
48.0000
W
Ohm's Law: V = IR. Power Law: P = VI = I²R = V²/R