How many amps is 1500 watts at 120V?

1500W ÷ 120V = 12.5 amps. A 1500-watt space heater on a 120V circuit draws 12.5 amps, which is within the 80% limit of a 15-amp circuit (12A max continuous).

How do I convert watts to amps?

Divide watts by volts: Amps = Watts ÷ Volts. For example, a 2400W appliance on 240V draws 10 amps.

How many watts is 15 amps at 120V?

15 amps × 120V = 1800 watts. With the NEC 80% continuous load rule, a 15-amp circuit can safely supply 1440 watts continuously.

What is the difference between watts and volt-amps (VA)?

Watts measure real power (actual work done). VA measures apparent power (voltage × current). They are equal for purely resistive loads but differ for inductive loads due to power factor.

How many amps does a 5000 watt air conditioner draw?

A 5000W air conditioner at 240V draws 20.8 amps, requiring a 30-amp breaker. At 120V, it would draw 41.7 amps, which is why large AC units use 240V.

Watts to Amps Converter — 120V, 240V, 480V

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Quick Answer

To convert watts to amps, divide watts by voltage: Amps = Watts ÷ Volts. For example, a 1500-watt space heater on a 120V circuit draws 12.5 amps — within the 80% continuous load limit of a 15-amp breaker (12A max continuous).

Use the Watts to Amps Converter below to get instant results.

Watts to Amps Converter

Convert watts to amps by dividing by voltage. Formula: Amps = Watts ÷ Volts.

Power (Watts): Voltage:

Common Appliance Examples

Appliance	Watts	120V Amps	240V Amps
LED Bulb	10W	0.08A	0.04A
Microwave	1200W	10A	5A
Hair Dryer	1875W	15.6A	7.8A
Electric Dryer	5000W	41.7A	20.8A
Water Heater	4500W	37.5A	18.75A

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Cite This Tool

Watts to Amps Converter. (2026). Electrical Calculators Online. Retrieved from https://electricalcalcpro.com/watts-to-amps-converter/

Watts to Amps Converter

Common Appliance Examples

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