Discover the relationship between power, voltage, current, and resistance with our intuitive watt calculator.

Electric power is the rate at which electrical energy is transferred. The formula is Power = Current × Voltage: Power (P) is measured in Watts (W), Current (I) is measured in Amps (A), and Voltage (V) …

Power consumption calculator: calculates electric power / voltage / current / resistance. Enter 2 values to get the other values and press the Calculate button: Voltage (V) calculation from current (I) and …

Mathematically, it is computed using the following equation. The standard metric unit of power is the Watt. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided …

We’ve seen the formula for determining the power in an electric circuit: by multiplying the voltage in “volts” by the current in “amps” we arrive at an answer in “watts.”

Use our electrical power calculator to quickly solve for power (W), voltage (V), current (A), or resistance (Ω) using P = V·I, P = I²R, or P = V²/R. Enter any two values, choose what to solve for, and get …

Aug 15, 2025 · Understanding electrical power is essential for everything from choosing the right components for a circuit to estimating your monthly electricity bill. Power tells you how quickly an …

Calculate electrical power from voltage and current with step-by-step solutions and unit conversions.

Oct 22, 2025 · Understanding how to calculate power in electrical, mechanical and digital systems is essential for designing energy efficient circuits and machines. This guide combines theory, formulas …

Power is the rate at which work is done or energy is transferred over time. It quantifies how quickly energy is used or work is performed in a system. Mathematically, power is defined as the amount of …