Kilowatt-Hours to Joules Converter

Enter the energy in kilowatt-hours below to get the value converted to joules.


Result in Joules:

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1 kWh = 3,600,000 J

Do you want to convert joules to kilowatt-hours?

How to Convert Kilowatt-Hours to Joules

To convert a measurement in kilowatt-hours to a measurement in joules, multiply the energy by the following conversion ratio: 3,600,000 joules/kilowatt-hour.

Since one kilowatt-hour is equal to 3,600,000 joules, you can use this simple formula to convert:

joules = kilowatt-hours × 3,600,000

The energy in joules is equal to the energy in kilowatt-hours multiplied by 3,600,000.

For example, here's how to convert 5 kilowatt-hours to joules using the formula above.
joules = (5 kWh × 3,600,000) = 18,000,000 J

How Many Joules Are in a Kilowatt-Hour?

There are 3,600,000 joules in a kilowatt-hour, which is why we use this value in the formula above.

1 kWh = 3,600,000 J

Kilowatt-hours and joules are both units used to measure energy. Keep reading to learn more about each unit of measure.

What Is a Kilowatt-Hour?

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.[1]

Learn more about kilowatt-hours.

What Is a Joule?

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.

Learn more about joules.

Kilowatt-Hour to Joule Conversion Table

Table showing various kilowatt-hour measurements converted to joules.
Kilowatt-hours Joules
0.000001 kWh 3.6 J
0.000002 kWh 7.2 J
0.000003 kWh 10.8 J
0.000004 kWh 14.4 J
0.000005 kWh 18 J
0.000006 kWh 21.6 J
0.000007 kWh 25.2 J
0.000008 kWh 28.8 J
0.000009 kWh 32.4 J
0.0000001 kWh 0.36 J
0.000001 kWh 3.6 J
0.00001 kWh 36 J
0.0001 kWh 360 J
0.001 kWh 3,600 J
0.01 kWh 36,000 J
0.1 kWh 360,000 J
1 kWh 3,600,000 J


  1. Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019,

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