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Megajoules to Kilocalories Converter

Convert megajoules (MJ) to kilocalories (food Calories) (kcal), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
239.005736138 kcal
joules (watt-seconds)
1,000,000 J
kilojoules
1,000 kJ
gigajoules
0.001 GJ
calories (thermochemical)
239,005.736138 cal
megacalories
0.239005736138 Mcal
watt-hours
277.777777778 Wh
kilowatt-hours
0.277777777778 kWh
megawatt-hours
0.000277777777778 MWh
British thermal units (IT)
947.817120313 Btu
million Btu
0.000947817120313 MMBtu
therms (100,000 Btu)
0.00947817120313 thm
quads (10¹⁵ Btu)
9.47817120313 × 10⁻¹³ quad
electronvolts
6.24150907446 × 10²⁴ eV
kiloelectronvolts
6.24150907446 × 10²¹ keV
megaelectronvolts
6.24150907446 × 10¹⁸ MeV

1 MJ = 239.005736138 kcal

Show the working
  1. 1 MJ = 239.005736138 kcal
  2. 1 × 239.005736138 = 239.005736138 kcal

How to convert megajoules to kilocalories

1 MJ = 239.005736138 kcal, so multiply by 239.005736138 to go from megajoules to kilocalories (food Calories). Going the other way, 1 kcal = 0.004184 MJ.

kcal = MJ × 239.005736138
MJ = kcal × 0.004184

Worked example:

1 MJ = 239.005736138 kcal
5 × 239.005736138 = 1195.02868069 kcal

Megajoules to kilocalories table

MegajoulesKilocalories
1 MJ239.005736138 kcal
2 MJ478.011472275 kcal
3 MJ717.017208413 kcal
4 MJ956.022944551 kcal
5 MJ1,195.02868069 kcal
6 MJ1,434.03441683 kcal
7 MJ1,673.04015296 kcal
8 MJ1,912.0458891 kcal
9 MJ2,151.05162524 kcal
10 MJ2,390.05736138 kcal
15 MJ3,585.08604207 kcal
20 MJ4,780.11472275 kcal
25 MJ5,975.14340344 kcal
30 MJ7,170.17208413 kcal
40 MJ9,560.22944551 kcal
50 MJ11,950.2868069 kcal
75 MJ17,925.4302103 kcal
100 MJ23,900.5736138 kcal
250 MJ59,751.4340344 kcal
500 MJ119,502.868069 kcal
1000 MJ239,005.736138 kcal

About the units

Kilocalories (kcal)
Kilocalories (food Calories), a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed