Megajoule to Calorie (th) Converter

Energy Converter

27 units available

Decimals:

From

To

239,005.736138

1 MJ = 239,005.736138 cal

Formula:

cal = MJ × 239,005.7361376673

With your value: 1 MJ = 239,005.73613767 cal

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 Calorie (th) conversions

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

Megajoule to Calorie (th) Conversion Table

Megajoule (MJ)	Calorie (th) (cal)
0.5	119,502.868069
1	239,005.736138
2	478,011.472275
5	1,195,028.680688
10	2,390,057.361377
15	3,585,086.042065
20	4,780,114.722753
25	5,975,143.403442
50	11,950,286.806883
100	23,900,573.613767
250	59,751,434.034417
500	119,502,868.068834
1000	239,005,736.137667

Calorie (th) to Megajoule Conversion Table

Calorie (th) (cal)	Megajoule (MJ)
0.5	2.092000e-6
1	4.184000e-6
2	8.368000e-6
5	2.092000e-5
10	4.184000e-5
15	6.276000e-5
20	8.368000e-5
25	0.000105
50	0.000209
100	0.000418
250	0.001046
500	0.002092
1000	0.004184

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

Calorie (th) (cal)

Energy

Exact conversion

The thermochemical calorie is exactly 4.184 J.

The International Table calorie (4.1868 J) and the 15 °C calorie differ slightly.

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 Calorie (th)

To convert from Megajoule (MJ) to Calorie (th) (cal), multiply the value by 239,005.7361376673.

Formula: cal = MJ × 239,005.7361376673

Reverse: MJ = cal × 0.000004184

Step-by-Step Example

Start with your value in Megajoule. For example: 5 MJ
Multiply by the conversion factor: 5 x 239,005.7361376673
The result is: 1,195,028.680688 cal

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 Calorie (th)

The thermochemical calorie equals 4.184 joules. Not to be confused with the food Calorie (kcal), which equals 1,000 calories.

Common uses: chemistry, nutrition, heating.

Frequently Asked Questions

How many Calorie (th) are in 1 Megajoule?

There are exactly 239,005.7361376673 Calorie (th) in 1 Megajoule. This means the conversion factor from Megajoule to Calorie (th) is 239,005.7361376673.

What is the formula to convert Megajoule to Calorie (th)?

The formula to convert Megajoule to Calorie (th) is: cal = MJ × 239,005.7361376673. For example, to convert 10 Megajoule to Calorie (th), you would multiply 10 by 239,005.7361376673.

What is a Megajoule?