Watts to Amps Calculator

Watts measure power (energy per unit time). Amps measure current flow. Relationship: Watts = Volts × Amps.

For sizing circuit breakers, fuses, and electrical cables. An undersized wire can overheat; an incorrectly rated breaker won't protect the circuit.

In AC circuits, power factor accounts for reactive loads (motors, inductors). A pure resistive load has PF = 1.0. Motors typically have PF = 0.8–0.95.