Kilocalories to Megajoules (kcal → MJ)
Formula
1 kcal = 0.004184 MJConversion Table
| kcal | MJ |
|---|---|
| 0 | 0 |
| 1.0000 | 0.0041840 |
| 2.0000 | 0.0083680 |
| 3.0000 | 0.012552 |
| 4.0000 | 0.016736 |
| 5.0000 | 0.020920 |
| 6.0000 | 0.025104 |
| 7.0000 | 0.029288 |
| 8.0000 | 0.033472 |
| 9.0000 | 0.037656 |
| 10.000 | 0.041840 |
| 11.000 | 0.046024 |
| 12.000 | 0.050208 |
| 13.000 | 0.054392 |
| 14.000 | 0.058576 |
| 15.000 | 0.062760 |
| 16.000 | 0.066944 |
| 17.000 | 0.071128 |
| 18.000 | 0.075312 |
| 19.000 | 0.079496 |
| kcal | MJ |
|---|---|
| 20.000 | 0.083680 |
| 21.000 | 0.087864 |
| 22.000 | 0.092048 |
| 23.000 | 0.096232 |
| 24.000 | 0.10042 |
| 25.000 | 0.10460 |
| 26.000 | 0.10878 |
| 27.000 | 0.11297 |
| 28.000 | 0.11715 |
| 29.000 | 0.12134 |
| 30.000 | 0.12552 |
| 31.000 | 0.12970 |
| 32.000 | 0.13389 |
| 33.000 | 0.13807 |
| 34.000 | 0.14226 |
| 35.000 | 0.14644 |
| 36.000 | 0.15062 |
| 37.000 | 0.15481 |
| 38.000 | 0.15899 |
| 39.000 | 0.16318 |
| kcal | MJ |
|---|---|
| 40.000 | 0.16736 |
| 41.000 | 0.17154 |
| 42.000 | 0.17573 |
| 43.000 | 0.17991 |
| 44.000 | 0.18410 |
| 45.000 | 0.18828 |
| 46.000 | 0.19246 |
| 47.000 | 0.19665 |
| 48.000 | 0.20083 |
| 49.000 | 0.20502 |
| 50.000 | 0.20920 |
| 51.000 | 0.21338 |
| 52.000 | 0.21757 |
| 53.000 | 0.22175 |
| 54.000 | 0.22594 |
| 55.000 | 0.23012 |
| 56.000 | 0.23430 |
| 57.000 | 0.23849 |
| 58.000 | 0.24267 |
| 59.000 | 0.24686 |
| kcal | MJ |
|---|---|
| 60.000 | 0.25104 |
| 61.000 | 0.25522 |
| 62.000 | 0.25941 |
| 63.000 | 0.26359 |
| 64.000 | 0.26778 |
| 65.000 | 0.27196 |
| 66.000 | 0.27614 |
| 67.000 | 0.28033 |
| 68.000 | 0.28451 |
| 69.000 | 0.28870 |
| 70.000 | 0.29288 |
| 71.000 | 0.29706 |
| 72.000 | 0.30125 |
| 73.000 | 0.30543 |
| 74.000 | 0.30962 |
| 75.000 | 0.31380 |
| 76.000 | 0.31798 |
| 77.000 | 0.32217 |
| 78.000 | 0.32635 |
| 79.000 | 0.33054 |
Kilocalories to Megajoules Conversion
Converting Kilocalories (kcal) to Megajoules (MJ) is a common energy and power conversion. 1 kcal equals 0.004184 MJ. For example, 100 kcal is equal to 0.4184 MJ.
Quick Mental Math: Kilocalories to Megajoules
5 kilocalories is 0.02092 megajoules, so use that as the mental anchor.
Why is converting Kilocalories to Megajoules tricky?
kilocalories to megajoules is easy to botch because small calories and food Calories differ by a factor of 1,000.
Quick Reference Values
1 kcal = 0.004184 MJ. 5 kcal = 0.02092 MJ. 10 kcal = 0.04184 MJ. 25 kcal = 0.1046 MJ. 50 kcal = 0.2092 MJ. 100 kcal = 0.4184 MJ.
What is Kilocalories?
Kilocalories (kcal) is a unit of energy and power. A kilocalorie equals exactly 1,000 calories and represents the amount of energy needed to raise the temperature of 1 kilogram of water by 1 degree Celsius. It is widely used to quantify food energy and is equivalent to 4,184 joules [bipm-si-brochure]. The calorie was introduced in the early 19th century by Nicolas Clément as a unit of heat energy. The kilocalorie became standard in nutrition science by the early 20th century to express food energy content [bipm-si-brochure]. Kilocalories are used globally in nutrition labeling, especially in the US and Europe, to indicate energy content of foods. Scientific contexts often prefer joules, but kcal remains prevalent in dietetics [nist-sp-811].
What is Megajoules?
Megajoules (MJ) is a unit of energy and power. A megajoule equals one million joules, the SI unit of energy, defined as the work done when applying a force of one newton over one meter. One MJ equals 1,000,000 J exactly. It is used to quantify large energy amounts in scientific, industrial, and engineering contexts [bipm-si-brochure]. The joule was named after James Prescott Joule in the 19th century, honoring his work on energy. The megajoule as a multiple of the joule was standardized with the SI system established by BIPM in 1960 to handle large-scale energy measurements [bipm-si-brochure]. Megajoules are widely used internationally in energy production, mechanical work quantification, and fuel energy content. Industries such as electricity generation, chemical manufacturing, and automotive engineering rely on MJ for reporting energy values [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: kilo calories, kcalorie, kilo-calories, mega joules, megajoule, mega-joules, megajoules energy. All of these refer to the Kilocalories to Megajoules conversion.