Electrical Power Calculator

The Electrical Power Calculator helps you quickly compute electrical power in watts (W) using basic electrical parameters: voltage (V), current (I), and resistance (R).

Formulas
The calculator uses the following formulas to determine power (P) in watts:
Using Voltage (V) and Current (I):   P=V×I
Using Current (I) and Resistance (R):   P=2²×R
Using Voltage (V) and Resistance (R):

Example
Using Voltage and Current
Voltage (V): 12 V
Current (I): 2 A
Calculation: P=V×I=12×2=24 W
Result: The power is 24 watts.