Megawatt-Hour to Kilojoule Converter

Energy Converter

27 units available

Decimals:

From

To

3,600,000

1 MWh = 3,600,000 kJ

Formula:

kJ = MWh × 3,600,000

With your value: 1 MWh = 3,600,000 kJ

How big is that?

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

Heartbeat (1/3.6e+9 your value)2.78e-10 MWh

AA battery charge (1/3.6e+5 your value)0.00000278 MWh

Slice of bread (1/1.3e+4 your value)0.0000778 MWh

Daily food intake (1/4.3e+2 your value)0.00233 MWh

Litre of petrol (1/1.1e+2 your value)0.00950 MWh

Your value1.00 MWh

Other Megawatt-Hour to Kilojoule conversions

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

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

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

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.

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

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

How to Convert Megawatt-Hour to Kilojoule

To convert from Megawatt-Hour (MWh) to Kilojoule (kJ), multiply the value by 3,600,000.

Formula: kJ = MWh × 3,600,000

Reverse: MWh = kJ × 2.777778e-7

Step-by-Step Example

Start with your value in Megawatt-Hour. For example: 5 MWh
Multiply by the conversion factor: 5 x 3,600,000
The result is: 18,000,000 kJ

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.

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.

Frequently Asked Questions

How many Kilojoule are in 1 Megawatt-Hour?

There are exactly 3,600,000 Kilojoule in 1 Megawatt-Hour. This means the conversion factor from Megawatt-Hour to Kilojoule is 3,600,000.

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

The formula to convert Megawatt-Hour to Kilojoule is: kJ = MWh × 3,600,000. For example, to convert 10 Megawatt-Hour to Kilojoule, you would multiply 10 by 3,600,000.

What is a Megawatt-Hour?