Convert between Power (Watts), Voltage (Volts), and Current (Amps) for DC circuits. Quickly determine load sizing and power requirements for electrical systems and components.
For DC circuits, the formula is simply Watts = Volts × Amps.
It provides a close estimate for resistive loads (like heaters or incandescent bulbs). For motors or computers, you must account for Power Factor (PF), as Watts = Volts × Amps × PF.
For AC, consider Power Factor.