Watts to kWh :

Electrical Calculator
Enter power in watts: W
Enter time in hours: hr
   
Energy result in kilowatt-hours: kWh
Watts :
  • The watt is a unit of power or radiant flux.In the International System of Units, it is defined as a derived unit of 1 kg·m²·s³ or, equivalently, 1 joule per second.
  • It is used to quantify the rate of energy transfer.
kWh :
  • The kilowatt-hour is a unit of energy equal to one kilowatt of power sustained for one hour and is commonly used as a measure of electrical energy.
  • One kilowatt-hour is equal to 3600 kilojoules.
Watts to kWh :
  • E (kWh) = P (W) x t (hr.) / 1000.
  • Which means that the energy in Kilowatt hour is computed by multiplying the power in watts by the time in seconds then the result is multiplied by 1000.
  • It can also be expressed as,Kilowatt hour = watt x hour / 1000 or kWh = W x hr. / 1000.

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