Kilocalories to Joules (kcal → J)
Formula
1 kcal = 4184 JConversion Table
| kcal | J |
|---|---|
| 0 | 0 |
| 1.0000 | 4,184.0 |
| 2.0000 | 8,368.0 |
| 3.0000 | 12,552 |
| 4.0000 | 16,736 |
| 5.0000 | 20,920 |
| 6.0000 | 25,104 |
| 7.0000 | 29,288 |
| 8.0000 | 33,472 |
| 9.0000 | 37,656 |
| 10.000 | 41,840 |
| 11.000 | 46,024 |
| 12.000 | 50,208 |
| 13.000 | 54,392 |
| 14.000 | 58,576 |
| 15.000 | 62,760 |
| 16.000 | 66,944 |
| 17.000 | 71,128 |
| 18.000 | 75,312 |
| 19.000 | 79,496 |
| kcal | J |
|---|---|
| 20.000 | 83,680 |
| 21.000 | 87,864 |
| 22.000 | 92,048 |
| 23.000 | 96,232 |
| 24.000 | 100,420 |
| 25.000 | 104,600 |
| 26.000 | 108,780 |
| 27.000 | 112,970 |
| 28.000 | 117,150 |
| 29.000 | 121,340 |
| 30.000 | 125,520 |
| 31.000 | 129,700 |
| 32.000 | 133,890 |
| 33.000 | 138,070 |
| 34.000 | 142,260 |
| 35.000 | 146,440 |
| 36.000 | 150,620 |
| 37.000 | 154,810 |
| 38.000 | 158,990 |
| 39.000 | 163,180 |
| kcal | J |
|---|---|
| 40.000 | 167,360 |
| 41.000 | 171,540 |
| 42.000 | 175,730 |
| 43.000 | 179,910 |
| 44.000 | 184,100 |
| 45.000 | 188,280 |
| 46.000 | 192,460 |
| 47.000 | 196,650 |
| 48.000 | 200,830 |
| 49.000 | 205,020 |
| 50.000 | 209,200 |
| 51.000 | 213,380 |
| 52.000 | 217,570 |
| 53.000 | 221,750 |
| 54.000 | 225,940 |
| 55.000 | 230,120 |
| 56.000 | 234,300 |
| 57.000 | 238,490 |
| 58.000 | 242,670 |
| 59.000 | 246,860 |
| kcal | J |
|---|---|
| 60.000 | 251,040 |
| 61.000 | 255,220 |
| 62.000 | 259,410 |
| 63.000 | 263,590 |
| 64.000 | 267,780 |
| 65.000 | 271,960 |
| 66.000 | 276,140 |
| 67.000 | 280,330 |
| 68.000 | 284,510 |
| 69.000 | 288,700 |
| 70.000 | 292,880 |
| 71.000 | 297,060 |
| 72.000 | 301,250 |
| 73.000 | 305,430 |
| 74.000 | 309,620 |
| 75.000 | 313,800 |
| 76.000 | 317,980 |
| 77.000 | 322,170 |
| 78.000 | 326,350 |
| 79.000 | 330,540 |
Kilocalories to Joules Conversion
Converting Kilocalories (kcal) to Joules (J) is a common energy and power conversion. 1 kcal equals 4,184 J. For example, 100 kcal is equal to 418,400 J.
Quick Mental Math: Kilocalories to Joules
0.01195 kilocalories is 50 joules, so use that as the mental anchor.
Why is converting Kilocalories to Joules tricky?
kilocalories to joules is easy to botch because small calories and food Calories differ by a factor of 1,000.
Quick Reference Values
1 kcal = 4,184 J. 5 kcal = 20,920 J. 10 kcal = 41,840 J. 25 kcal = 104,600 J. 50 kcal = 209,200 J. 100 kcal = 418,400 J.
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 Joules?
Joules (J) is a unit of energy and power. The joule is the SI unit of energy defined as the work done when a force of one newton moves an object one meter in the direction of the force. It equals one kilogram meter squared per second squared (kg·m²/s²). This definition aligns with the International System of Units as standardized by the BIPM [bipm-si-brochure]. The joule is named after James Prescott Joule, a 19th-century physicist who studied energy conservation. It was officially adopted as a unit of energy by the CGPM in 1948 to unify energy measurement standards internationally [cgpm-resolutions]. Joules are used worldwide in physics, engineering, and electrical industries to quantify energy, work, and heat. Countries using the SI system, including those in Europe, Asia, and the Americas, rely on joules for scientific and industrial applications [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: kilo calories, kcalorie, kilo-calories, joule, joul, jouls, juls. All of these refer to the Kilocalories to Joules conversion.