Megajoule to Kilocalorie Converter

Energy Converter

27 units available

Decimals:

From

To

239.005736

1 MJ = 239.005736 kcal

Formula:

kcal = MJ × 239.0057361377

With your value: 1 MJ = 239.00573614 kcal

How big is that?

Everyday references on a logarithmic scale, all expressed in megajoule so you can sanity-check the result.

Heartbeat (1/1.0e+6 your value)0.00000100 MJ

AA battery charge (1/1.0e+2 your value)0.0100 MJ

Slice of bread (1/3.6 your value)0.280 MJ

Your value1.00 MJ

Daily food intake (8.4× your value)8.40 MJ

Litre of petrol (34× your value)34.2 MJ

Other Megajoule to Kilocalorie conversions

2 MJ to kcal 3 MJ to kcal 4 MJ to kcal 5 MJ to kcal 6 MJ to kcal 7 MJ to kcal 8 MJ to kcal

Megajoule to Kilocalorie Conversion Table

Megajoule (MJ)	Kilocalorie (kcal)
0.5	119.502868
1	239.005736
2	478.011472
5	1,195.028681
10	2,390.057361
15	3,585.086042
20	4,780.114723
25	5,975.143403
50	11,950.286807
100	23,900.573614
250	59,751.434034
500	119,502.868069
1000	239,005.736138

Kilocalorie to Megajoule Conversion Table

Kilocalorie (kcal)	Megajoule (MJ)
0.5	0.002092
1	0.004184
2	0.008368
5	0.02092
10	0.04184
15	0.06276
20	0.08368
25	0.1046
50	0.2092
100	0.4184
250	1.046
500	2.092
1000	4.184

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Megajoule (MJ)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Kilocalorie (kcal)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Megajoule to Kilocalorie

To convert from Megajoule (MJ) to Kilocalorie (kcal), multiply the value by 239.0057361377.

Formula: kcal = MJ × 239.0057361377

Reverse: MJ = kcal × 0.004184

Step-by-Step Example

Start with your value in Megajoule. For example: 5 MJ
Multiply by the conversion factor: 5 x 239.0057361377
The result is: 1,195.028681 kcal

About Megajoule

The megajoule (MJ) is a unit of energy and work. One megajoule equals 1.000000 × 10^+6 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Kilocalorie

The kilocalorie (food Calorie) equals 1,000 calories or 4,184 joules. It is the standard unit for food energy content.

Common uses: nutrition, diet, food labeling.

Frequently Asked Questions

How many Kilocalorie are in 1 Megajoule?

There are exactly 239.0057361377 Kilocalorie in 1 Megajoule. This means the conversion factor from Megajoule to Kilocalorie is 239.0057361377.

What is the formula to convert Megajoule to Kilocalorie?

The formula to convert Megajoule to Kilocalorie is: kcal = MJ × 239.0057361377. For example, to convert 10 Megajoule to Kilocalorie, you would multiply 10 by 239.0057361377.

What is a Megajoule?