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How many attojoule in 1 kilocalorie?
The answer is 4.1858E+21.
We assume you are converting between attojoule and kilocalorie [15 °C].
You can view more details on each measurement unit:
attojoule or kilocalorie
The SI derived unit for energy is the joule.
1 joule is equal to 1.0E+18 attojoule, or 0.00023890295761862 kilocalorie.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between attojoules and kilocalories.
Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from kilocalorie to attojoule, or enter any two units below:
attojoule to ton
attojoule to hartree
attojoule to kiloton
attojoule to inch ounce
attojoule to exajoule
attojoule to picojoule
attojoule to joule
attojoule to tonne of coal equivalent
attojoule to microjoule
attojoule to therm
The SI prefix "atto" represents a factor of 10-18, or in exponential notation, 1E-18.
So 1 attojoule = 10-18 joules.
The definition of a joule is as follows:
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).
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