Kilojoule to Kilowatt-hour Conversion
Convert between Kilojoule and Kilowatt-hour quickly and accurately.
How to Convert Kilojoule to Kilowatt-hour
Conversion Formula
Example
Convert 15 kJ to kW⋅h:
Unit Information
Learn about the energy units you're converting between
Kilojoule
kJ
Definition
A kilojoule (symbol: kJ) is a unit of energy equal to 1,000 joules. It is commonly used for measuring larger amounts of energy in food, exercise, and industrial applications. One kilojoule equals approximately 0.239 kilocalories.
History/Origin
The kilojoule was introduced as a practical unit for measuring larger energy quantities in the metric system. It became widely used in the late 20th century for food labeling and energy consumption measurements.
Current Use
Kilojoules are extensively used in nutrition labeling worldwide, exercise physiology for measuring energy expenditure, industrial energy consumption monitoring, and scientific research for measuring moderate energy quantities.
Multiplier
1000
Offset
0
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
Kilojoule to Kilowatt-hour Conversion Table
| Kilojoule [kJ] | Kilowatt-hour [kW⋅h] |
|---|---|
| 1 kJ | 0.000278 kW⋅h |
| 10 kJ | 0.002778 kW⋅h |
| 25 kJ | 0.006944 kW⋅h |
| 50 kJ | 0.013889 kW⋅h |
| 100 kJ | 0.027778 kW⋅h |
| 0 kJ | 0E+0 kW⋅h |
| -10 kJ | -0.002778 kW⋅h |
| -40 kJ | -0.011111 kW⋅h |
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