Convert joule to kilowatt-hour
Please provide values below to convert joule [J] to kilowatt-hour [kW*h], or Convert kilowatt-hour to joule.
How to Convert Joule to Kilowatt-Hour
1 J = 2.77777777777778e-07 kW*h
Example: convert 15 J to kW*h:
15 J = 15 × 2.77777777777778e-07 kW*h = 4.16666666666667e-06 kW*h
Joule to Kilowatt-Hour Conversion Table
| joule | kilowatt-hour |
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Joule
The joule (J) is the SI unit of energy, work, and heat, defined as the work done when a force of one newton acts over a distance of one meter.
History/Origin
The joule was named after James Prescott Joule in 1889 to honor his work in energy and thermodynamics. It was adopted as the SI unit of energy in 1948.
Current Use
The joule is widely used in physics, engineering, and everyday contexts to quantify energy, work, and heat in various applications, including electricity, mechanics, and thermodynamics.
Kilowatt-Hour
A kilowatt-hour (kW·h) is a unit of energy equal to the energy transferred or used when a power of one kilowatt is sustained for one hour.
History/Origin
The kilowatt-hour originated in the late 19th century with the development of electrical power systems, becoming a standard unit for measuring electrical energy consumption and billing.
Current Use
It is widely used today in electricity billing, energy consumption monitoring, and in various engineering and scientific applications to quantify electrical energy usage.