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How many joule in 1 calories? The answer is 4.1858. We assume you are converting between joule and calorie [15 °C]. You can view more details on each measurement unit: joule or calories The SI derived unit for energy is the joule. 1 joule is equal to 0.23890295761862 calories. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between joules and calories. Type in your own numbers in the form to convert the units!
1 joule to calories = 0.2389 calories
5 joule to calories = 1.19451 calories
10 joule to calories = 2.38903 calories
20 joule to calories = 4.77806 calories
30 joule to calories = 7.16709 calories
40 joule to calories = 9.55612 calories
50 joule to calories = 11.94515 calories
75 joule to calories = 17.91772 calories
100 joule to calories = 23.8903 calories
You can do the reverse unit conversion from calories to joule, or enter any two units below:
The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889).
15 °C calorie: the amount of energy required to warm 1 g of air-free water from 14.5 °C to 15.5 °C at a constant pressure of 101.325 kPa (1 atm). Experimental values of this calorie ranged from 4.1852 J to 4.1858 J. The CIPM in 1950 published a mean experimental value of 4.1855 J, noting an uncertainty of 0.0005 J.
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