MJ to Calories Converter (MJ to cal)

How to convert megajoules to calories

Formulacal = MJ × 239,005.7361

Multiply the value in megajoules by 239,005.7361. To go the other way, multiply by 0.000004184 (or divide by 239,005.7361).

A megajoule is larger than a calorie: one megajoule contains 239,005.7361 calories.

Worked examples

1 megajoule1 MJ × 239,005.7361 = 239,005.7361 cal
5 megajoules5 MJ × 239,005.7361 = 1,195,028.681 cal
10 megajoules10 MJ × 239,005.7361 = 2,390,057.361 cal
20 megajoules20 MJ × 239,005.7361 = 4,780,114.723 cal
100 megajoules100 MJ × 239,005.7361 = 23,900,573.61 cal

Megajoules to calories conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Megajoules to calories: 0.1–10 MJ
Megajoules (MJ)	Calories (cal)
0.1 MJ	23,900.574 cal
0.25 MJ	59,751.434 cal
0.5 MJ	119,502.87 cal
1 MJ	239,005.74 cal
2 MJ	478,011.47 cal
3 MJ	717,017.21 cal
4 MJ	956,022.94 cal
5 MJ	1,195,028.7 cal
6 MJ	1,434,034.4 cal
7 MJ	1,673,040.2 cal
8 MJ	1,912,045.9 cal
9 MJ	2,151,051.6 cal
10 MJ	2,390,057.4 cal

Megajoules to calories: 12–1,000 MJ
Megajoules (MJ)	Calories (cal)
12 MJ	2,868,068.8 cal
15 MJ	3,585,086 cal
20 MJ	4,780,114.7 cal
25 MJ	5,975,143.4 cal
30 MJ	7,170,172.1 cal
40 MJ	9,560,229.4 cal
50 MJ	11,950,287 cal
75 MJ	17,925,430 cal
100 MJ	23,900,574 cal
250 MJ	59,751,434 cal
500 MJ	119,502,870 cal
1,000 MJ	239,005,740 cal

About the units

Megajoule (MJ)

The megajoule (MJ) is a unit of energy in the International System of Units (SI). One megajoule equals 1,000,000 joules (J).

Calorie (cal)

The “small” calorie: exactly 4.184 J (thermochemical definition), roughly the energy to heat one gram of water by 1 °C.

Frequently asked questions

How many calories are in one megajoule?

There are 239,005.7361 calories in one megajoule, and this value is exact by definition.

How do I convert megajoules to calories?

Multiply the number of megajoules by 239,005.7361. For example, 10 MJ × 239,005.7361 = 2,390,057.361 cal.

How many megajoules are in one calorie?

One calorie equals 0.000004184 megajoules. That is the reverse factor, 1 ÷ 239,005.7361.

What is 10 megajoules in calories?

10 MJ = 2,390,057.361 cal.

Is this MJ to cal converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

MJ to Calories Converter