Kilojoules To Megajoules Conversion


1 kJ = 0.001 MJ

Want to convert from megajoules to kilojoules instead?

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How to convert kilojoules to megajoules (kJ to MJ)

The formula for converting kilojoules to megajoules is: MJ = kJ × 0.001. To calculate the kilojoule value in megajoules first substitute the kilojoule value into the preceding formula, and then perform 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

In other words, 1 kilojoule is equal to 0.001 megajoules.

Example Conversion

Let's take a look at an example. The step-by-step process to convert 9 kilojoules to megajoules is:

  1. Understand the conversion formula: MJ = kJ × 0.001
  2. Substitute the required value. In this case we substitute 9 for kJ so the formula becomes: MJ = 9 × 0.001
  3. Calculate the result using the provided values. In our example the result is: 9 × 0.001 = 0.009 MJ

In summary, 9 kilojoules is equal to 0.009 megajoules.

Converting megajoules to kilojoules

In order to convert the other way around i.e. megajoules to kilojoules, you would use the following formula: kJ = MJ × 1000. To convert megajoules to kilojoules first substitute the megajoule value into the above formula, and then execute the calculation. If we wanted to calculate 1 megajoule in kilojoules we follow these steps:

kJ = MJ × 1000

kJ = 1 × 1000

kJ = 1000

Or in other words, 1 megajoule is equal to 1000 kilojoules.

Conversion Unit Definitions

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.

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.

Kilojoules To Megajoules Conversion Table

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

Kilojoule (kJ)Megajoule (MJ)
1 kJ0.001 MJ
2 kJ0.002 MJ
3 kJ0.003 MJ
4 kJ0.004 MJ
5 kJ0.005 MJ
6 kJ0.006 MJ
7 kJ0.007 MJ
8 kJ0.008 MJ
9 kJ0.009 MJ
10 kJ0.01 MJ
11 kJ0.011 MJ
12 kJ0.012 MJ
13 kJ0.013 MJ

Other Common Kilojoule Conversions

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

1 kilojoule in joules1000 J
1 kilojoule in gigajoules0.000001 GJ
1 kilojoule in calories238.8458966275 cal
1 kilojoule in kilocalories0.2388458966275 kcal
1 kilojoule in watt hours0.27777777777778 Wh
1 kilojoule in kilowatt hours0.00027777777777778 kWh
1 kilojoule in watt seconds1000 Ws
1 kilojoule in electron volts6241509074461000000000 eV
1 kilojoule in mega electron volts6241509074461000 MeV