Calories To Megajoules Conversion


1 cal = 0.0000041868 MJ

Want to convert from megajoules to calories instead?

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How to convert calories to megajoules (cal to MJ)

The formula for converting calories to megajoules is: MJ = cal × 0.0000041868. To calculate the calorie value in megajoules first substitute the calorie value into the preceding formula, and then perform the calculation. If we wanted to calculate 1 calorie in megajoules we follow these steps:

MJ = cal × 0.0000041868

MJ = 1 × 0.0000041868

MJ = 0.0000041868

In other words, 1 calorie is equal to 0.0000041868 megajoules.

Example Conversion

Let's take a look at an example. The step-by-step process to convert 3 calories to megajoules is:

  1. Understand the conversion formula: MJ = cal × 0.0000041868
  2. Substitute the required value. In this case we substitute 3 for cal so the formula becomes: MJ = 3 × 0.0000041868
  3. Calculate the result using the provided values. In our example the result is: 3 × 0.0000041868 = 0.0000125604 MJ

In summary, 3 calories is equal to 0.0000125604 megajoules.

Converting megajoules to calories

In order to convert the other way around i.e. megajoules to calories, you would use the following formula: cal = MJ × 238845.8966275. To convert megajoules to calories first substitute the megajoule value into the above formula, and then execute the calculation. If we wanted to calculate 1 megajoule in calories we follow these steps:

cal = MJ × 238845.8966275

cal = 1 × 238845.8966275

cal = 238845.8966275

Or in other words, 1 megajoule is equal to 238845.8966275 calories.

Conversion Unit Definitions

What is a Calorie?

A calorie (cal) is a unit of energy commonly used in nutrition. It represents the amount of energy required to raise the temperature of one gram of water by one degree Celsius (or one degree Kelvin). In the context of nutrition, the term "calorie" usually refers to a kilocalorie, which is equal to 1,000 calories in scientific terms.
The energy content of food and beverages is often measured in kilocalories, abbreviated as kcal or Cal (with an uppercase "C" to distinguish it from the smaller "cal" used in physics).
In scientific terms, 1 kilocalorie is equal to 4.184 kilojoules (kJ). The conversion factor between kilocalories (kcal) and kilojoules (kJ) is 1 kcal = 4.184 kJ.
In everyday language, when people refer to the number of calories in food, they are usually referring to kilocalories. For example, if a food label says a serving contains 200 calories, it means 200 kilocalories or 200,000 calories in scientific terms.

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.

Calories To Megajoules Conversion Table

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

Calorie (cal)Megajoule (MJ)
1 cal0.0000041868 MJ
2 cal0.0000083736 MJ
3 cal0.0000125604 MJ
4 cal0.0000167472 MJ
5 cal0.000020934 MJ
6 cal0.0000251208 MJ
7 cal0.0000293076 MJ
8 cal0.0000334944 MJ
9 cal0.0000376812 MJ
10 cal0.000041868 MJ
11 cal0.0000460548 MJ
12 cal0.0000502416 MJ
13 cal0.0000544284 MJ

Other Common Calorie Conversions

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

1 calorie in ergs41868000 erg
1 calorie in joules4.1868 J
1 calorie in kilojoules0.0041868 kJ
1 calorie in gigajoules0.0000000041868 GJ
1 calorie in kilocalories0.001 kcal
1 calorie in megacalories0.000001 Mcal
1 calorie in watt hours0.0011622222 Wh
1 calorie in kilowatt hours0.0000011622222 kWh
1 calorie in watt seconds4.1868 Ws
1 calorie in btus0.0039652608749183 Btu
1 calorie in electron volts26131952590564000000 eV