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kilowatt-hour to kilojoule

Live kilowatt-hour (kWh) to kilojoule (kJ) converter. Plus a 10-value reference table and FAQs.

From kWh

kilowatt-hour

To kJ

kilojoule

1 kWh = 3,600kJ

Conversion table

Ten sample values from kilowatt-hour to kilojoule. Use the converter above for arbitrary values.

kilowatt-hour (kWh)	→	kilojoule (kJ)
0.001 kWh	→	3.6 kJ
0.01 kWh	→	36 kJ
0.1 kWh	→	360 kJ
0.5 kWh	→	1,800 kJ
1 kWh	→	3,600 kJ
2 kWh	→	7,200 kJ
5 kWh	→	18,000 kJ
10 kWh	→	36,000 kJ
100 kWh	→	360,000 kJ
1,000 kWh	→	3,600,000 kJ

About the kilowatt-hour

1000 Wh. Electricity bills.

About the kilojoule

1000 J. Food labels in some countries.

How kilowatt-hour to kilojoule conversion works

Both units belong to Energy. Unitbox first expresses the input in the category reference unit (J), then expresses that same quantity in kilojoule.

The right unit depends on the convention used by your industry, country, instrument, or source document.

Reference value1 kWh = 3,600 kJ

CalculationBrowser-side, using Unitbox's shared unit data

Review noteFor safety-critical work, verify against the governing standard or instrument manual.

Unit definitions and conversion factors are maintained in the Unitbox methodology. Last reviewed with the current conversion dataset.

Frequently asked questions

Frequently Asked Questions

How do I convert kilowatt-hour to kilojoule?

Multiply the kilowatt-hour value by 3,600 to get it in kilojoule. For example, 10 kWh = 36,000 kJ.

What is 1 kWh in kJ?

1 kWh = 3,600 kJ.

What is 100 kWh in kJ?

100 kWh = 360,000 kJ.

What is the formula?

Linear: multiply by 3,600 (the unit factor ratio).

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Convert the other direction

Use the reverse converter: kilojoule → kilowatt-hour

Browse all units in this category

Energy has 10 units.

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