Joules to Kilocalories (J → kcal)
Formula
1 J = 0.0002390057361376673 kcalConversion Table
| J | kcal |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00023901 |
| 2.0000 | 0.00047801 |
| 3.0000 | 0.00071702 |
| 4.0000 | 0.00095602 |
| 5.0000 | 0.0011950 |
| 6.0000 | 0.0014340 |
| 7.0000 | 0.0016730 |
| 8.0000 | 0.0019120 |
| 9.0000 | 0.0021511 |
| 10.000 | 0.0023901 |
| 11.000 | 0.0026291 |
| 12.000 | 0.0028681 |
| 13.000 | 0.0031071 |
| 14.000 | 0.0033461 |
| 15.000 | 0.0035851 |
| 16.000 | 0.0038241 |
| 17.000 | 0.0040631 |
| 18.000 | 0.0043021 |
| 19.000 | 0.0045411 |
| J | kcal |
|---|---|
| 20.000 | 0.0047801 |
| 21.000 | 0.0050191 |
| 22.000 | 0.0052581 |
| 23.000 | 0.0054971 |
| 24.000 | 0.0057361 |
| 25.000 | 0.0059751 |
| 26.000 | 0.0062141 |
| 27.000 | 0.0064532 |
| 28.000 | 0.0066922 |
| 29.000 | 0.0069312 |
| 30.000 | 0.0071702 |
| 31.000 | 0.0074092 |
| 32.000 | 0.0076482 |
| 33.000 | 0.0078872 |
| 34.000 | 0.0081262 |
| 35.000 | 0.0083652 |
| 36.000 | 0.0086042 |
| 37.000 | 0.0088432 |
| 38.000 | 0.0090822 |
| 39.000 | 0.0093212 |
| J | kcal |
|---|---|
| 40.000 | 0.0095602 |
| 41.000 | 0.0097992 |
| 42.000 | 0.010038 |
| 43.000 | 0.010277 |
| 44.000 | 0.010516 |
| 45.000 | 0.010755 |
| 46.000 | 0.010994 |
| 47.000 | 0.011233 |
| 48.000 | 0.011472 |
| 49.000 | 0.011711 |
| 50.000 | 0.011950 |
| 51.000 | 0.012189 |
| 52.000 | 0.012428 |
| 53.000 | 0.012667 |
| 54.000 | 0.012906 |
| 55.000 | 0.013145 |
| 56.000 | 0.013384 |
| 57.000 | 0.013623 |
| 58.000 | 0.013862 |
| 59.000 | 0.014101 |
| J | kcal |
|---|---|
| 60.000 | 0.014340 |
| 61.000 | 0.014579 |
| 62.000 | 0.014818 |
| 63.000 | 0.015057 |
| 64.000 | 0.015296 |
| 65.000 | 0.015535 |
| 66.000 | 0.015774 |
| 67.000 | 0.016013 |
| 68.000 | 0.016252 |
| 69.000 | 0.016491 |
| 70.000 | 0.016730 |
| 71.000 | 0.016969 |
| 72.000 | 0.017208 |
| 73.000 | 0.017447 |
| 74.000 | 0.017686 |
| 75.000 | 0.017925 |
| 76.000 | 0.018164 |
| 77.000 | 0.018403 |
| 78.000 | 0.018642 |
| 79.000 | 0.018881 |
Joules to Kilocalories Conversion
Converting Joules (J) to Kilocalories (kcal) is a common energy and power conversion. 1 J equals 0.000239 kcal. For example, 100 J is equal to 0.023901 kcal.
Quick Mental Math: Joules to Kilocalories
4,184 joules is 1 kilocalorie, so 8,368 joules is 2 kilocalories.
Why is converting Joules to Kilocalories tricky?
joules to kilocalories is easy to botch because small calories and food Calories differ by a factor of 1,000.
Quick Reference Values
1 J = 0.000239 kcal. 5 J = 0.001195 kcal. 10 J = 0.00239 kcal. 25 J = 0.005975 kcal. 50 J = 0.01195 kcal. 100 J = 0.023901 kcal.
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].
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].
Common Misspellings
People often search for this conversion using these alternate spellings: joule, joul, jouls, juls, kilo calories, kcalorie, kilo-calories. All of these refer to the Joules to Kilocalories conversion.