Kilocalories to Megajoules Converter

Convert kilocalories (food Calories) (kcal) to megajoules (MJ), 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.

Value

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

Result: 0.004184 MJ
joules (watt-seconds): 4,184 J
kilojoules: 4.184 kJ
gigajoules: 4.184 × 10⁻⁶ GJ
calories (thermochemical): 1,000 cal
megacalories: 0.001 Mcal
watt-hours: 1.16222222222 Wh
kilowatt-hours: 0.00116222222222 kWh
megawatt-hours: 1.16222222222 × 10⁻⁶ MWh
British thermal units (IT): 3.96566683139 Btu
million Btu: 3.96566683139 × 10⁻⁶ MMBtu
therms (100,000 Btu): 3.96566683139 × 10⁻⁵ thm
quads (10¹⁵ Btu): 3.96566683139 × 10⁻¹⁵ quad
electronvolts: 2.61144739675 × 10²² eV
kiloelectronvolts: 2.61144739675 × 10¹⁹ keV
megaelectronvolts: 2.61144739675 × 10¹⁶ MeV

1 kcal = 0.004184 MJ

Show the working

1 kcal = 0.004184 MJ
1 × 0.004184 = 0.004184 MJ

How to convert kilocalories to megajoules

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

MJ = kcal × 0.004184
kcal = MJ × 239.005736138

Worked example:

1 kcal = 0.004184 MJ
5 × 0.004184 = 0.02092 MJ

Kilocalories to megajoules table

Kilocalories	Megajoules
1 kcal	0.004184 MJ
2 kcal	0.008368 MJ
3 kcal	0.012552 MJ
4 kcal	0.016736 MJ
5 kcal	0.02092 MJ
6 kcal	0.025104 MJ
7 kcal	0.029288 MJ
8 kcal	0.033472 MJ
9 kcal	0.037656 MJ
10 kcal	0.04184 MJ
15 kcal	0.06276 MJ
20 kcal	0.08368 MJ
25 kcal	0.1046 MJ
30 kcal	0.12552 MJ
40 kcal	0.16736 MJ
50 kcal	0.2092 MJ
75 kcal	0.3138 MJ
100 kcal	0.4184 MJ
250 kcal	1.046 MJ
500 kcal	2.092 MJ
1000 kcal	4.184 MJ

About the units

Kilocalories (kcal): Kilocalories (food Calories), a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
Megajoules (MJ): Megajoules, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).

Formula version 0.1.0Reviewed

Kilocalories to Megajoules Converter

How to convert kilocalories to megajoules

Kilocalories to megajoules table

About the units

Related conversions