Kilowatt-hour to Joule Conversion
Convert between Kilowatt-hour and Joule quickly and accurately.
How to Convert Kilowatt-hour to Joule
Conversion Formula
Example
Convert 15 kW⋅h to J:
Unit Information
Learn about the energy units you're converting between
Kilowatt-hour
kW⋅h
Definition
A kilowatt-hour (symbol: kWh) is a unit of energy equal to the amount of energy consumed by a 1-kilowatt device running for one hour. It equals 3.6 million joules and is the standard unit for electrical energy billing.
History/Origin
The kilowatt-hour was developed in the late 19th century with the widespread adoption of electrical power systems. It became the standard unit for electrical energy billing and remains the primary unit for electricity consumption worldwide.
Current Use
Kilowatt-hours are used exclusively for electrical energy billing, measuring household and industrial electricity consumption, calculating energy costs, monitoring electrical device efficiency, and renewable energy production tracking.
Multiplier
3600000
Offset
0
Joule
J
Definition
The joule (symbol: J) is the SI base unit of energy, work, and heat. It is defined as the work done when a force of one newton moves an object one meter in the direction of the force. One joule equals one newton-meter or one watt-second.
History/Origin
The joule was named after James Prescott Joule (1818-1889), an English physicist who established the mechanical equivalent of heat. It was officially adopted as the SI unit of energy in 1948, replacing the calorie in scientific contexts.
Current Use
Joules are used universally in physics, engineering, and chemistry for measuring energy, work, and heat. Applications include electrical energy calculations, mechanical work, thermal energy, and energy efficiency measurements in all scientific and industrial fields.
Multiplier
1
Offset
0
Kilowatt-hour to Joule Conversion Table
| Kilowatt-hour [kW⋅h] | Joule [J] |
|---|---|
| 1 kW⋅h | 3600000 J |
| 10 kW⋅h | 36000000 J |
| 25 kW⋅h | 90000000 J |
| 50 kW⋅h | 180000000 J |
| 100 kW⋅h | 360000000 J |
| 0 kW⋅h | 0E+0 J |
| -10 kW⋅h | -36000000 J |
| -40 kW⋅h | -144000000 J |
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