Convert joule to calorie
You are currently converting energy units from joule to calorie
Conversion base:
1 J = 0.2388458966275 cal
1 cal = 4.1868 J
Calories and kilocalories
The calorie of food labels is really the kilocalorie: 1 kcal = 1,000 cal = 4.1868 kJ, the heat that warms a kilogram of water by one degree. Nutrition labels in the EU must give both kJ and kcal, the US gives 'Calories' with a capital C meaning kcal, and the adult reference intake is 2,000 kcal, about 8,400 kJ. A slice of bread is around 80 kcal, an hour's brisk walk burns about 300.
Switch units
Starting unit
- Joule family
- calories and kilocalories
- watt x time
- energy equivalent units
- kg of oil equivalent koe
- tonne of oil equivalent toe
- thousand tonnes of oil equivalent ktoe
- million tonnes of oil equivalent Mtoe
- barrel of oil equivalent boe
- thousand barrels of oil equivalent kboe
- million barrels of oil equivalent Mboe
- billion m3 natural gas Gm3 NG
- billion ft3 natural gas Gft3 NG
- million tonnes liquefied natural gas Mt LNG
- billion tonnes liquefied natural gas Gt LNG
- kg hard coal kg SKE
- t hard coal t SKE
- electronVolt
- other energy units
Destination unit
- Joule family
- calories and kilocalories
- watt x time
- energy equivalent units
- kg of oil equivalent koe
- tonne of oil equivalent toe
- thousand tonnes of oil equivalent ktoe
- million tonnes of oil equivalent Mtoe
- barrel of oil equivalent boe
- thousand barrels of oil equivalent kboe
- million barrels of oil equivalent Mboe
- billion m3 natural gas Gm3 NG
- billion ft3 natural gas Gft3 NG
- million tonnes liquefied natural gas Mt LNG
- billion tonnes liquefied natural gas Gt LNG
- kg hard coal kg SKE
- t hard coal t SKE
- electronVolt
- other energy units
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