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Free amps to watts converter with instant bidirectional conversion. Enter amps to get watts or watts to get amps, then set your voltage for accurate electrical calculations.
Last updated: April 16, 2026
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Electrical Formulas
watts = amps x volts and amps = watts / volts
Amps to Watts
10 A at 120 V = 1,200 W
Formula: 10 x 120 = 1200.0000 W
Kilowatts
1.2 kW
Milliamps
10,000 mA
Quick reference
Formula
W = A x V
Ideal for estimating power from circuit current.
Formula
A = W / V
Useful for understanding current draw at a given load.
Includes
kW and mA
Helps with electrical planning and documentation.
At 120V, 15A equals 1,800W.
Input
15A @ 120V
Output
1,800W
This amps to watts converter uses the core electrical power relationship between current, power, and voltage. Voltage is required to get accurate results in both directions.
watts = amps x voltsamps = watts / voltskilowatts = watts / 1000These formulas are standard for quick DC and simplified AC power calculations.
Result: 12A at 230V equals 2,760W
Equivalent power is 2.76kW and current is 12,000mA.
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