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Free electricity calculator to estimate electricity usage as well as cost based on the power requirements and usage of appliances.
Convert amps to kilowatts for AC and DC circuits with our amps to kW calculator, plus learn the formulas to do the conversion.
Convert watts to kilowatt-hours (kWh) given power in watts and time in hours. Learn how to calculate kilowatt-hours using a simple formula.
The current I in amps is equal to the power P in kilowatts multiplied by 1,000, divided by the product of the voltage V in volts, the efficiency η, and the power factor PF. Try our power factor calculator to get the power factor if needed.
Convert quickly between between horsepower, kilowatts, megawatts, volt amperes, watts and other metric and imperial power units.
Convert among power and heat flow units. Convert to watt, horsepower, joules per hour, and BTU per hour. Learn how to convert among power and heat flow rate units.
Energy & power calculation. The average power P in watts (W) is equal to the energy consumed E in joules (J) divided by time period Δ t in seconds (s): P(W) = E(J) / Δ t(s) Electric power .
Online calculator to convert watts to kilowatts (W to kW) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Power or Electricity units.
Instant free online tool for watt to kilowatt conversion or vice versa. The watt [W] to kilowatt [kW] conversion table and conversion steps are also listed. Also, explore tools to convert watt or kilowatt to other power units or learn more about power conversions.
Amps to kW calculator. Enter the current in amps (A), voltage in volts (V), select power factor (PF) from 0 to 1 with a 0.1 step (for AC), then press the Calculate button to get the result in kilowatts (kW).