# Gigajoules to Megacalories Converter

Enter the energy in gigajoules below to get the value converted to megacalories.

## Result in Megacalories:

1 GJ = 239.005736 Mcal

Do you want to convert megacalories to gigajoules?

## How to Convert Gigajoules to Megacalories

To convert a measurement in gigajoules to a measurement in megacalories, multiply the energy by the following conversion ratio: 239.005736 megacalories/gigajoule.

Since one gigajoule is equal to 239.005736 megacalories, you can use this simple formula to convert:

megacalories = gigajoules × 239.005736

The energy in megacalories is equal to the energy in gigajoules multiplied by 239.005736.

For example, here's how to convert 5 gigajoules to megacalories using the formula above.
megacalories = (5 GJ × 239.005736) = 1,195.028681 Mcal

### How Many Megacalories Are in a Gigajoule?

There are 239.005736 megacalories in a gigajoule, which is why we use this value in the formula above.

1 GJ = 239.005736 Mcal

## What Is a Gigajoule?

One gigajoule is equal to 1,000,000,000 joules, which is the energy equal to the force on an object of one newton at a distance of one meter.

The gigajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "giga" is the prefix for billions, or 109. Gigajoules can be abbreviated as GJ; for example, 1 gigajoule can be written as 1 GJ.

## What Is a Megacalorie?

One megacalorie is equal to 1,000,000 calories, which is the heat needed to raise the temperature of one gram of water from 14.5 to 15.5 degrees Celsius. One megacalorie is equal to 4.184 megajoules.

Megacalories can be abbreviated as Mcal; for example, 1 megacalorie can be written as 1 Mcal.

## Gigajoule to Megacalorie Conversion Table

Table showing various gigajoule measurements converted to megacalories.
Gigajoules Megacalories
1 GJ 239.01 Mcal
2 GJ 478.01 Mcal
3 GJ 717.02 Mcal
4 GJ 956.02 Mcal
5 GJ 1,195 Mcal
6 GJ 1,434 Mcal
7 GJ 1,673 Mcal
8 GJ 1,912 Mcal
9 GJ 2,151 Mcal
10 GJ 2,390 Mcal
11 GJ 2,629 Mcal
12 GJ 2,868 Mcal
13 GJ 3,107 Mcal
14 GJ 3,346 Mcal
15 GJ 3,585 Mcal
16 GJ 3,824 Mcal
17 GJ 4,063 Mcal
18 GJ 4,302 Mcal
19 GJ 4,541 Mcal
20 GJ 4,780 Mcal
21 GJ 5,019 Mcal
22 GJ 5,258 Mcal
23 GJ 5,497 Mcal
24 GJ 5,736 Mcal
25 GJ 5,975 Mcal
26 GJ 6,214 Mcal
27 GJ 6,453 Mcal
28 GJ 6,692 Mcal
29 GJ 6,931 Mcal
30 GJ 7,170 Mcal
31 GJ 7,409 Mcal
32 GJ 7,648 Mcal
33 GJ 7,887 Mcal
34 GJ 8,126 Mcal
35 GJ 8,365 Mcal
36 GJ 8,604 Mcal
37 GJ 8,843 Mcal
38 GJ 9,082 Mcal
39 GJ 9,321 Mcal
40 GJ 9,560 Mcal