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Convert between amps and watts for both alternating current (AC) and direct current (DC) flows
Ampere (A) is a unit of electric current. Electric current is the rate of electric charge flow per time unit. One ampere (A) is equal to one coulomb (Q) per second (s).
To convert amps to watts, we need to use the following formula for electrical power: P (W) = I (A) * V (V) In a simple equation, here’s the relation: Watts = Amps * Volts. To calculate watts, we need both the amperage and voltage (usually either 120V or 220V).
To convert watts (electrical power) to amps (electrical current) at a fixed voltage, you can use a variation of Watt's Law formula: Power = Current × Voltage (P = IV). By working backwards, we get the equation: amps = watts ÷ volts, which can be used to convert watts to amps.
If you don't understand volts vs watts vs amps, you can't understand how much power a circuit is producing. Below, we've explained the difference between wattage and amperage to help you better understand power supplies and demands for electric appliances and devices.
Convert amps to watts with our electrical conversion calculator, plus learn the formulas for DC, and single-phase or three-phase AC circuits.
The difference between line-to-line and line-to-neutral voltages. This watts to amps calculator (also known as amps to watts calculator or amperage calculator) helps you understand how to calculate watts of a circuit depending on the type of the current.