Gigajoules to Kilocalories (GJ → kcal)
Formula
1 GJ = 239005.7361376673 kcalConversion Table
| GJ | kcal |
|---|---|
| 0 | 0 |
| 1.0000 | 239,010 |
| 2.0000 | 478,010 |
| 3.0000 | 717,020 |
| 4.0000 | 956,020 |
| 5.0000 | 1,195,000 |
| 6.0000 | 1,434,000 |
| 7.0000 | 1,673,000 |
| 8.0000 | 1,912,000 |
| 9.0000 | 2,151,100 |
| 10.000 | 2,390,100 |
| 11.000 | 2,629,100 |
| 12.000 | 2,868,100 |
| 13.000 | 3,107,100 |
| 14.000 | 3,346,100 |
| 15.000 | 3,585,100 |
| 16.000 | 3,824,100 |
| 17.000 | 4,063,100 |
| 18.000 | 4,302,100 |
| 19.000 | 4,541,100 |
| GJ | kcal |
|---|---|
| 20.000 | 4,780,100 |
| 21.000 | 5,019,100 |
| 22.000 | 5,258,100 |
| 23.000 | 5,497,100 |
| 24.000 | 5,736,100 |
| 25.000 | 5,975,100 |
| 26.000 | 6,214,100 |
| 27.000 | 6,453,200 |
| 28.000 | 6,692,200 |
| 29.000 | 6,931,200 |
| 30.000 | 7,170,200 |
| 31.000 | 7,409,200 |
| 32.000 | 7,648,200 |
| 33.000 | 7,887,200 |
| 34.000 | 8,126,200 |
| 35.000 | 8,365,200 |
| 36.000 | 8,604,200 |
| 37.000 | 8,843,200 |
| 38.000 | 9,082,200 |
| 39.000 | 9,321,200 |
| GJ | kcal |
|---|---|
| 40.000 | 9,560,200 |
| 41.000 | 9,799,200 |
| 42.000 | 10,038,000 |
| 43.000 | 10,277,000 |
| 44.000 | 10,516,000 |
| 45.000 | 10,755,000 |
| 46.000 | 10,994,000 |
| 47.000 | 11,233,000 |
| 48.000 | 11,472,000 |
| 49.000 | 11,711,000 |
| 50.000 | 11,950,000 |
| 51.000 | 12,189,000 |
| 52.000 | 12,428,000 |
| 53.000 | 12,667,000 |
| 54.000 | 12,906,000 |
| 55.000 | 13,145,000 |
| 56.000 | 13,384,000 |
| 57.000 | 13,623,000 |
| 58.000 | 13,862,000 |
| 59.000 | 14,101,000 |
| GJ | kcal |
|---|---|
| 60.000 | 14,340,000 |
| 61.000 | 14,579,000 |
| 62.000 | 14,818,000 |
| 63.000 | 15,057,000 |
| 64.000 | 15,296,000 |
| 65.000 | 15,535,000 |
| 66.000 | 15,774,000 |
| 67.000 | 16,013,000 |
| 68.000 | 16,252,000 |
| 69.000 | 16,491,000 |
| 70.000 | 16,730,000 |
| 71.000 | 16,969,000 |
| 72.000 | 17,208,000 |
| 73.000 | 17,447,000 |
| 74.000 | 17,686,000 |
| 75.000 | 17,925,000 |
| 76.000 | 18,164,000 |
| 77.000 | 18,403,000 |
| 78.000 | 18,642,000 |
| 79.000 | 18,881,000 |
Gigajoules to Kilocalories Conversion
Converting Gigajoules (GJ) to Kilocalories (kcal) is a common energy and power conversion. 1 GJ equals 239,005.736138 kcal. For example, 100 GJ is equal to 23,900,573.613767 kcal.
Quick Mental Math: Gigajoules to Kilocalories
1 gigajoule is 239000 kilocalories, so use that as the mental anchor.
Why is converting Gigajoules to Kilocalories tricky?
gigajoules to kilocalories is easy to botch because small calories and food Calories differ by a factor of 1,000.
Quick Reference Values
1 GJ = 239,005.736138 kcal. 5 GJ = 1,195,028.680688 kcal. 10 GJ = 2,390,057.361377 kcal. 25 GJ = 5,975,143.403442 kcal. 50 GJ = 11,950,286.806883 kcal. 100 GJ = 23,900,573.613767 kcal.
What is Gigajoules?
Gigajoules (GJ) is a unit of energy and power. The gigajoule is a unit of energy equal to one billion joules (10⁹ J). One joule is the energy transferred when applying one newton of force over one meter, so a gigajoule represents a large energy quantity used in industrial and scientific applications [bipm-si-brochure]. The joule was defined in the 19th century and named after James Prescott Joule. The prefix 'giga-' was adopted internationally as part of SI prefixes in 1960 by the CGPM to denote a factor of 10⁹, formalizing the gigajoule as an SI derived unit [cgpm-resolutions]. Gigajoules are widely used in energy industries such as natural gas and electricity production, especially in Canada and Australia. They appear in energy statistics and engineering calculations per standards from BIPM and NIST [bipm-si-brochure][nist-sp-811].
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: giga joules, giga-joules, giga joule, gigajoule, kilo calories, kcalorie, kilo-calories. All of these refer to the Gigajoules to Kilocalories conversion.