Kilojoule [kJ] to Watt-hour [Wh] Converter

Quick Reference

1 Kilojoule (kJ) = 0.2777777778 Watt-hour (Wh)

1 Watt-hour (Wh) = 3.6 Kilojoule (kJ)

Origin value

Target value

Round result

How to Convert Kilojoule to Watt-hour

1 kJ = 0.2777777778 Wh
1 Wh = 3.6 kJ

To convert Kilojoule to Watt-hour, divide the value by 3.6 (equivalently, multiply by 0.2777777778). To convert Watt-hour back to Kilojoule, multiply by 3.6.

Example: convert 10 kJ to Wh:
10 kJ = 10 x 0.2777777778 = 2.777777778 Wh

↔ Convert Watt-hour to Kilojoule

Kilojoule

Definition: A kilojoule (symbol: kJ) is equal to 1000 joules. It's a unit of energy.

History/origin: Based on the joule, using the SI prefix 'kilo-' to denote a factor of one thousand.

Current use: Commonly used to express the energy content of food, fuels, and other substances when the joule would be impractically small. Also used in thermodynamics and other areas of physics and engineering.

Watt-hour

Definition: A watt-hour (symbol Wh) is a unit of energy equal to one watt of power sustained for one hour. It is commonly used to measure electrical energy consumption.

History/origin: The watt-hour is derived from the watt, the SI unit of power, and the hour, a unit of time. It was developed alongside the increasing use of electricity in the late 19th and early 20th centuries.

Current use: Watt-hours are commonly used to measure the energy capacity of batteries, the energy consumption of household appliances, and the amount of electricity generated or consumed by power plants and consumers.

Kilojoule to Watt-hour Conversion Table

Kilojoule [kJ]	Watt-hour [Wh]
1 kJ	0.2777777778 Wh
2 kJ	0.5555555556 Wh
5 kJ	1.388888889 Wh
10 kJ	2.777777778 Wh
20 kJ	5.555555556 Wh
50 kJ	13.88888889 Wh
100 kJ	27.77777778 Wh
200 kJ	55.55555556 Wh
500 kJ	138.8888889 Wh
1000 kJ	277.7777778 Wh