Kilojoule to Kilowatt-hour Conversion

Convert between Kilojoule and Kilowatt-hour quickly and accurately.

kJ
kW⋅h

How to Convert Kilojoule to Kilowatt-hour

Conversion Formula

1 kJ = 0 kW⋅h
1 kW⋅h = 3600 kJ

Example

Convert 15 kJ to kW⋅h:

15 kJ = 15 × 0 kW⋅h = 0.004 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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