How many hartree in 1 calorie?
The answer is 9.6010131961291E+17.
We assume you are converting between hartree and calorie [15 °C].
You can view more details on each measurement unit: hartree or
calorie
The SI derived unit for energy is the joule.
1 joule is equal to 2.2937104486906E+17 hartree, or 0.23890295761862 calorie.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between hartrees and calories.
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The Hartree energy (symbol Eh) is a physical constant used as atomic unit of energy, named after physicist Douglas Hartree.

››Definition: Calorie

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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