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Watts to Amps Converter

Convert watts to amps at 120/240V with power factor.

Inputs

Inputs and assumptions

Nameplate watts. Space heater 1500, window AC 1200, dryer 3000.

Circuit voltage: 120 or 240 in US homes.

1.0 for resistive loads; 0.8 to 0.9 for motors.

Result

Current
—
Power
—
Load on a 15A circuit
—

What to check

  • Equipment wattage
  • Circuit voltage
  • Power factor for motors

Related calculators

This calculator is a first-pass screening tool. Verify your utility tariff, metered usage, equipment specifications, and installer quotes before making a decision.

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