Kilowatt to Kilojoule/Hour Converter

Power Converter

22 units available

Decimals:

From

To

3,600

1 kW = 3,600 kJ/h

Formula:

kJ/h = kW × 3,600

With your value: 1 kW = 3,600 kJ/h

How big is that?

Everyday references on a logarithmic scale, all expressed in kilowatt so you can sanity-check the result.

LED bulb (1/1.1e+2 your value)0.00900 kW

Laptop (1/15 your value)0.0650 kW

Microwave oven (1.0× your value)1.00 kW

Your value1.00 kW

Electric kettle (3.0× your value)3.00 kW

Family car engine (90× your value)90.0 kW

Other Kilowatt to Kilojoule/Hour conversions

2 kW to kJ/h 3 kW to kJ/h 4 kW to kJ/h 5 kW to kJ/h 6 kW to kJ/h 7 kW to kJ/h 8 kW to kJ/h

Kilowatt to Kilojoule/Hour Conversion Table

Kilowatt (kW)	Kilojoule/Hour (kJ/h)
0.5	1,800
1	3,600
2	7,200
5	18,000
10	36,000
15	54,000
20	72,000
25	90,000
50	180,000
100	360,000
250	900,000
500	1,800,000
1000	3,600,000

Kilojoule/Hour to Kilowatt Conversion Table

Kilojoule/Hour (kJ/h)	Kilowatt (kW)
0.5	0.000139
1	0.000278
2	0.000556
5	0.001389
10	0.002778
15	0.004167
20	0.005556
25	0.006944
50	0.013889
100	0.027778
250	0.069444
500	0.138889
1000	0.277778

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Kilowatt (kW)

Power

Exact conversion

Derived from the watt (1 W = 1 J/s).

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Kilojoule/Hour (kJ/h)

Power

Exact conversion

Derived from the watt (1 W = 1 J/s).

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Kilowatt to Kilojoule/Hour

To convert from Kilowatt (kW) to Kilojoule/Hour (kJ/h), multiply the value by 3,600.

Formula: kJ/h = kW × 3,600

Reverse: kW = kJ/h × 0.0002777778

Step-by-Step Example

Start with your value in Kilowatt. For example: 5 kW
Multiply by the conversion factor: 5 x 3,600
The result is: 18,000 kJ/h

About Kilowatt

The kilowatt (kW) is a unit of power. One kilowatt equals 1000 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

About Kilojoule/Hour

The kilojoule/hour (kJ/h) is a unit of power. One kilojoule/hour equals 0.2777777778 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

Frequently Asked Questions

How many Kilojoule/Hour are in 1 Kilowatt?

There are exactly 3,600 Kilojoule/Hour in 1 Kilowatt. This means the conversion factor from Kilowatt to Kilojoule/Hour is 3,600.

What is the formula to convert Kilowatt to Kilojoule/Hour?

The formula to convert Kilowatt to Kilojoule/Hour is: kJ/h = kW × 3,600. For example, to convert 10 Kilowatt to Kilojoule/Hour, you would multiply 10 by 3,600.

What is a Kilowatt?