WikiUnits

Convert Watt hour [Wh] to...

Wh
Unit system metric
Unit of energy
Symbol Wh
Unit conversions
1 Wh in ... ... is equal to ...
SI units 3600 J
Imperial/US unit(s) 3.412 BTU
Other unit(s) 0.8599 kcal

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The kilowatt-hour (symbol kWh) is a derived unit of energy equal to 3.6 megajoules.

If the energy is being transmitted or used at a constant rate (power) over a period of time, the total energy in kilowatt-hours is the power in kilowatts multiplied by the time in hours. The kilowatt-hour is commonly used as a billing unit for energy delivered to consumers by electric utilities.

All the SI prefixes are commonly applied to the watt-hour: a kilowatt-hour is 1,000 W·h; a megawatt-hour is 1 million W·h; a milliwatt-hour is 1/1000 W·h and so on.

The kilowatt-hour is commonly used by electrical distribution providers for purposes of billing, since the monthly energy consumption of a typical residential customer ranges from a few hundred to a few thousand kilowatt-hours.

This article uses material from the Wikipedia article "Kilowatt hour", which is released under the Creative Commons Attribution-Share-Alike License 3.0.