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Kilowatt-hour [kWh] to Kilojoule [kJ] Converter

Quick Reference

1 Kilowatt-hour (kWh) = 3600 Kilojoule (kJ)

1 Kilojoule (kJ) = 0.0002777777778 Kilowatt-hour (kWh)

How to Convert Kilowatt-hour to Kilojoule

1 kWh = 3600 kJ
1 kJ = 0.0002777777778 kWh

To convert Kilowatt-hour to Kilojoule, multiply the value by 3600. To convert Kilojoule back to Kilowatt-hour, divide by 3600.

Example: convert 10 kWh to kJ:
10 kWh = 10 x 3600 = 36000 kJ

↔ Convert Kilojoule to Kilowatt-hour

Kilowatt-hour

Definition: A kilowatt-hour (symbol kWh) is a unit of energy equal to one kilowatt (1,000 watts) of power sustained for one hour. It is a standard unit for measuring electrical energy consumption.

History/origin: The kilowatt-hour became widely adopted with the expansion of electrical grids and the need for a practical unit to measure household and industrial energy usage.

Current use: Kilowatt-hours are the standard unit used by utility companies to bill consumers for electricity usage. It's also used to specify the energy output of power plants and the energy consumption of large appliances.

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.

Kilowatt-hour to Kilojoule Conversion Table

Kilowatt-hour [kWh]Kilojoule [kJ]
1 kWh3600 kJ
2 kWh7200 kJ
5 kWh18000 kJ
10 kWh36000 kJ
20 kWh72000 kJ
50 kWh180000 kJ
100 kWh360000 kJ
200 kWh720000 kJ
500 kWh1800000 kJ
1000 kWh3600000 kJ

Common Kilowatt-hour to Kilojoule conversions

Common pairs of Energy

Kilowatt-hour [kWh] to Kilojoule [kJ] Converter

What is 1 kWh in kJ?
1 Kilowatt-hour (kWh) equals 3,600 kJ, and 1 kJ equals 0.0002777777778 kWh.
How do I convert Kilowatt-hour to Kilojoule?
Multiply by 3,600: 10 kWh × 3,600 = 36,000 kJ. The converter above does it for any value, with the precision you choose.
What is 100 kWh in kJ?
100 kWh = 360,000 kJ. Common amounts are listed on this page, each with its own step-by-step page.
Is a Kilowatt-hour bigger than a Kilojoule?
Yes. 1 kWh = 3,600 kJ, so the same quantity becomes a larger number when written in kJ.
Kilowatt-hour to Kilojoule Converter | UtilLab