Megajoules To Kilojoules Conversion


1 MJ = 1,000 kJ

Want to convert from kilojoules to megajoules instead?

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How to convert megajoules to kilojoules (MJ to kJ)

The formula for converting megajoules to kilojoules is: kJ = MJ × 1000. To calculate the megajoule value in kilojoules first substitute the megajoule value into the preceding formula, and then perform the calculation. If we wanted to calculate 1 megajoule in kilojoules we follow these steps:

kJ = MJ × 1000

kJ = 1 × 1000

kJ = 1000

In other words, 1 megajoule is equal to 1000 kilojoules.

Example Conversion

Let's take a look at an example. The step-by-step process to convert 4 megajoules to kilojoules is:

  1. Understand the conversion formula: kJ = MJ × 1000
  2. Substitute the required value. In this case we substitute 4 for MJ so the formula becomes: kJ = 4 × 1000
  3. Calculate the result using the provided values. In our example the result is: 4 × 1000 = 4000 kJ

In summary, 4 megajoules is equal to 4000 kilojoules.

Converting kilojoules to megajoules

In order to convert the other way around i.e. kilojoules to megajoules, you would use the following formula: MJ = kJ × 0.001. To convert kilojoules to megajoules first substitute the kilojoule value into the above formula, and then execute the calculation. If we wanted to calculate 1 kilojoule in megajoules we follow these steps:

MJ = kJ × 0.001

MJ = 1 × 0.001

MJ = 0.001

Or in other words, 1 kilojoule is equal to 0.001 megajoules.

Conversion Unit Definitions

What is a Megajoule?

A megajoule (MJ) is a metric unit of energy in the International System of Units (SI). One megajoule is equal to 1,000,000 joules or 1×106 joules. The prefix "mega-" signifies a factor of one million, so a megajoule is a large unit of energy, often used in contexts where significant amounts of energy are involved.
Megajoules are commonly used in various scientific, engineering, and industrial applications to measure large quantities of energy. For instance, in the field of nutrition, the energy content of food is sometimes measured in megajoules per serving. In energy-related contexts, such as electricity generation or large-scale industrial processes, the energy output or consumption is often expressed in megajoules.

What is a Kilojoule?

A kilojoule (kJ) is a metric unit of energy in the International System of Units (SI). One kilojoule is equal to 1,000 joules. It is commonly used in nutrition and chemistry to express the energy content of foods and the energy released or absorbed in chemical reactions.
In the context of nutrition, kilojoules are often used to measure the energy value of foods and beverages. The energy we obtain from the food we eat is usually expressed in kilojoules or kilocalories (commonly referred to as calories). One kilocalorie is approximately equal to 4.184 kilojoules.
In chemical reactions, especially in the field of thermodynamics, energy changes are frequently measured in joules or kilojoules. The prefix "kilo-" denotes a factor of 1,000, so 1 kilojoule is equivalent to 1,000 joules.

Megajoules To Kilojoules Conversion Table

Below is a lookup table showing common megajoules to kilojoules conversion values.

Megajoule (MJ)Kilojoule (kJ)
1 MJ1000 kJ
2 MJ2000 kJ
3 MJ3000 kJ
4 MJ4000 kJ
5 MJ5000 kJ
6 MJ6000 kJ
7 MJ7000 kJ
8 MJ8000 kJ
9 MJ9000 kJ
10 MJ10000 kJ
11 MJ11000 kJ
12 MJ12000 kJ
13 MJ13000 kJ

Other Common Megajoule Conversions

Below is a table of common conversions from megajoules to other energy units.

1 megajoule in joules1000000 J
1 megajoule in gigajoules0.001 GJ
1 megajoule in calories238845.8966275 cal
1 megajoule in kilocalories238.8458966275 kcal
1 megajoule in watt hours277.77777777778 Wh
1 megajoule in kilowatt hours0.27777777777778 kWh
1 megajoule in megawatt hours0.00027777777777778 MWh
1 megajoule in btus947.08628903179 Btu
1 megajoule in quads0.00000000000094708628903179 Q