Convert Kilojoules (kJ) to Watt-hours (Wh)
Enter a value below to convert Kilojoules (kJ) to Watt-hours (Wh).
Conversion:
1 Kilojoules (kJ) = 0.27777777778 Watt-hours (Wh)
How to Convert Kilojoules (kJ) to Watt-hours (Wh)
1 kj = 0.27777777778 wh
1 wh = 3.6 kj
Example: convert 15 Kilojoules (kJ) to Watt-hours (Wh):
25 kj = 6.9444444444 wh
Kilojoules (kJ) to Watt-hours (Wh) Conversion Table
| Kilojoules (kJ) | Watt-hours (Wh) |
|---|---|
| 0.01 kj | 0.0027777777778 wh |
| 0.1 kj | 0.027777777778 wh |
| 1 kj | 0.27777777778 wh |
| 2 kj | 0.55555555556 wh |
| 3 kj | 0.83333333333 wh |
| 5 kj | 1.3888888889 wh |
| 10 kj | 2.7777777778 wh |
| 20 kj | 5.5555555556 wh |
| 50 kj | 13.888888889 wh |
| 100 kj | 27.777777778 wh |
| 1000 kj | 277.77777778 wh |
Kilojoules (kJ)
Definition
A kilojoule (kJ) is a unit of energy equal to 1,000 joules. It is commonly used for expressing larger quantities of energy in nutritional contexts and engineering.
History
The kilojoule naturally derives from the joule with the SI kilo- prefix. It gained widespread use in the 20th century, particularly in countries adopting the metric system for food energy labeling.
Current use
Kilojoules are the primary energy unit on food labels in Australia, New Zealand, and many European countries. They are also used in heating, ventilation, and chemical energy calculations.
Watt-hours (Wh)
Definition
A watt-hour (Wh) is a unit of energy equal to the work done by one watt of power sustained for one hour. It equals 3,600 joules.
History
The watt-hour emerged with the development of electrical power systems in the late 19th century. It provided a practical way to measure and bill for electrical energy consumption.
Current use
Watt-hours are used for small battery capacities (e.g., phone batteries, portable electronics) and as a base unit for kilowatt-hours used in household electricity metering.