Kilojoule to Megawatt-Hour Converter

Energy Converter

27 units available

Decimals:

From

To

2.777778e-7

1 kJ = 2.777778e-7 MWh

Formula:

MWh = kJ × 2.777778e-7

With your value: 1 kJ = 2.777778e-7 MWh

How big is that?

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

Heartbeat (1/1.0e+3 your value)0.00100 kJ

Your value1.00 kJ

AA battery charge (10× your value)10.0 kJ

Slice of bread (2.8e+2× your value)280 kJ

Daily food intake (8.4e+3× your value)8.40e+3 kJ

Litre of petrol (3.4e+4× your value)3.42e+4 kJ

Other Kilojoule to Megawatt-Hour conversions

2 kJ to MWh 3 kJ to MWh 4 kJ to MWh 5 kJ to MWh 6 kJ to MWh 7 kJ to MWh 8 kJ to MWh

Kilojoule to Megawatt-Hour Conversion Table

Kilojoule (kJ)	Megawatt-Hour (MWh)
0.5	1.388889e-7
1	2.777778e-7
2	5.555556e-7
5	1.388889e-6
10	2.777778e-6
15	4.166667e-6
20	5.555556e-6
25	6.944444e-6
50	1.388889e-5
100	2.777778e-5
250	6.944444e-5
500	0.000139
1000	0.000278

Megawatt-Hour to Kilojoule Conversion Table

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

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.

Kilojoule (kJ)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

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

Megawatt-Hour (MWh)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

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 Kilojoule to Megawatt-Hour

To convert from Kilojoule (kJ) to Megawatt-Hour (MWh), multiply the value by 2.777778e-7.

Formula: MWh = kJ × 2.777778e-7

Reverse: kJ = MWh × 3,600,000

Step-by-Step Example

Start with your value in Kilojoule. For example: 5 kJ
Multiply by the conversion factor: 5 x 2.777778e-7
The result is: 1.388889e-6 MWh

About Kilojoule

The kilojoule (kJ) is a unit of energy and work. One kilojoule equals 1000 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

About Megawatt-Hour

The megawatt-hour (MWh) is a unit of energy and work. One megawatt-hour equals 3.600000 × 10^+9 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

Frequently Asked Questions

How many Megawatt-Hour are in 1 Kilojoule?

There are exactly 2.777778e-7 Megawatt-Hour in 1 Kilojoule. This means the conversion factor from Kilojoule to Megawatt-Hour is 2.777778e-7.

What is the formula to convert Kilojoule to Megawatt-Hour?

The formula to convert Kilojoule to Megawatt-Hour is: MWh = kJ × 2.777778e-7. For example, to convert 10 Kilojoule to Megawatt-Hour, you would multiply 10 by 2.777778e-7.

What is a Kilojoule?