# Online Joules to kWh conversion

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# Joules to kWh conversion

## Joules to kWh conversion calculator

Enter the energy in joules and press the *Convert* button:

#### Joules to kWh

The joule is the energy equal to the force on an object of one newton at a distance of one meter.[1] One joule is equal to the heat energy dissipated by the current of one ampere through one ohm of resistance for one second.

One joule is also equal to the energy needed to move an electric charge of one coulomb through a potential difference of one volt. In addition, one joule is also equal to the one watt-second.

The joule is the SI derived unit for energy in the metric system. Joules can be abbreviated as J; for example, 1 joule can be written as 1 J.

A kilowatt-hour is a measure of electrical energy equal to one kilowatt, or 1,000 watts, of power over a one hour period. Kilowatt-hours are a measure of electrical work performed over a period of time, and are often used as a way of measuring energy usage by electric companies.

Kilowatt-hours are usually abbreviated as kWh, although the formally adopted expression is kW·h. The abbreviation kW h is also sometimes used. For example, 1 kilowatt-hour can be written as 1 kWh, 1 kW·h, or 1 kW h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.

#### How to convert joules to kWh

One joule is equal to 2.777778⋅10^{-7} kilowatt-hours:

1J = 2.777778⋅10^{-7}kWh = (1/3600000)kWh

So the energy in kilowatt-hour E_{(kWh)} is equal to the energy in joules E_{(J)} divided by 3600000:

E_{(kWh)} = E_{(J)} / 3600000 = E(J) ⋅ 2.777778⋅10^{-7}