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Multiply the battery's voltage by its amp-hours to get the battery's capacity in Watt-hours: capacity (in Wh) = voltage × amp-hours. Discover the relationship between power, voltage, current, and resistance with our intuitive watt calculator.
Electric power in watts (W) to electric current in amps (A) calculator.
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.
Our watt converter is a simple yet useful tool that converts between watts and any power unit. This tool has more than ten different power units for you to choose from, and it's really easy to use. You can read about the watt conversion calculations in the short text below, where we cover the following:
To convert amps (electrical current) to watts (electrical power) at a fixed voltage, you can use the equation: watts = amps × volts. Simply multiply your amps figure by the voltage. Example calculations. 15 amps × 120 volts = 1800 watts; 20 amps × 120 volts = 2400 watts; Amps to watts at 120V (AC)
How to convert watts to VA The real power P in watts (W) is equal to the apparent power S in volt-amperes (VA) times the power factor (PF) or cosine of the phase angle φ: P (W) = S (VA) ⋅ PF = S (VA) ⋅ cos φ
Watts to amps calculator helps you convert the electric power into amperage, or vice versa, depending on the applied kind of current.
Convert quickly between between horsepower, kilowatts, megawatts, volt amperes, watts and other metric and imperial power units.
Select a conversion type and the desired units. A watt is a unit of power in the International System of Units (SI) and named after the British engineer James Watt. The symbol for watt is W. A watt is equal to one joule per second.
Free online power converter - converts between 76 units of power, including watt [W], exawatt [EW], petawatt [PW], terawatt [TW], etc. Also, explore many other unit converters or learn more about power unit conversions.