Electronvolts to Kilocalories Converter

Enter the energy in electronvolts below to get the value converted to kilocalories.


Result in Kilocalories:

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1 eV = 3.8293E-23 kcal
Hint: use a scientific notation calculator to convert E notation to decimal

Do you want to convert kilocalories to electronvolts?

How to Convert Electronvolts to Kilocalories

To convert a measurement in electronvolts to a measurement in kilocalories, multiply the energy by the following conversion ratio: 3.8293E-23 kilocalories/electronvolt.

Since one electronvolt is equal to 3.8293E-23 kilocalories, you can use this simple formula to convert:

kilocalories = electronvolts × 3.8293E-23

The energy in kilocalories is equal to the energy in electronvolts multiplied by 3.8293E-23.

For example, here's how to convert 5.0E+22 electronvolts to kilocalories using the formula above.
kilocalories = (5.0E+22 eV × 3.8293E-23) = 1.914647 kcal

Electronvolts and kilocalories are both units used to measure energy. Keep reading to learn more about each unit of measure.

What Is an Electronvolt?

An electronvolt is the amount of energy required to accelerate an electron through a difference in electric potential of one volt in vacuum. One electronvolt is equal to the charge of 1.602176634 × 10−19 C, and is equal to the energy of 1.602176634 × 10−19 Joules.[1]

Electronvolts can be abbreviated as eV; for example, 1 electronvolt can be written as 1 eV.

Energy in electronvolts can be expressed using the following formula: E = qV

The energy E in electronvolts is equal to the electric charge q in elementary charge times the potential difference V in volts.

Learn more about electronvolts.

What Is a Kilocalorie?

One kilocalorie, is equal to the heat needed to raise the temperature of one kilogram of water from 14.5 to 15.5 degrees Celsius.

Kilocalories can be abbreviated as kcal; for example, 1 kilocalorie can be written as 1 kcal.

When being used to measure nutrition or metabolic processes, the large calorie is used, which is equal to one kilocalorie.

Learn more about kilocalories.

Electronvolt to Kilocalorie Conversion Table

Table showing various electronvolt measurements converted to kilocalories.
Electronvolts Kilocalories
1 eV 0.000000000000000000000038293 kcal
2 eV 0.000000000000000000000076586 kcal
3 eV 0.00000000000000000000011488 kcal
4 eV 0.00000000000000000000015317 kcal
5 eV 0.00000000000000000000019146 kcal
6 eV 0.00000000000000000000022976 kcal
7 eV 0.00000000000000000000026805 kcal
8 eV 0.00000000000000000000030634 kcal
9 eV 0.00000000000000000000034464 kcal
10 eV 0.00000000000000000000038293 kcal
100 eV 0.0000000000000000000038293 kcal
1,000 eV 0.000000000000000000038293 kcal
10,000 eV 0.00000000000000000038293 kcal
100,000 eV 0.0000000000000000038293 kcal
1,000,000 eV 0.000000000000000038293 kcal
10,000,000 eV 0.00000000000000038293 kcal
100,000,000 eV 0.0000000000000038293 kcal
1,000,000,000 eV 0.000000000000038293 kcal
10,000,000,000 eV 0.00000000000038293 kcal
100,000,000,000 eV 0.0000000000038293 kcal
1,000,000,000,000 eV 0.000000000038293 kcal
10,000,000,000,000 eV 0.00000000038293 kcal
100,000,000,000,000 eV 0.0000000038293 kcal
1,000,000,000,000,000 eV 0.000000038293 kcal
10,000,000,000,000,000 eV 0.00000038293 kcal
100,000,000,000,000,000 eV 0.0000038293 kcal
1,000,000,000,000,000,000 eV 0.000038293 kcal
10,000,000,000,000,000,000 eV 0.000383 kcal
100,000,000,000,000,000,000 eV 0.003829 kcal
1,000,000,000,000,000,000,000 eV 0.038293 kcal
10,000,000,000,000,000,000,000 eV 0.382929 kcal
99,999,999,999,999,991,611,392 eV 3.8293 kcal


  1. Tatum, J., Electricity and Magnetism - 2.3: Electron-volts, https://phys.libretexts.org/Bookshelves/Electricity_and_Magnetism/Electricity_and_Magnetism_(Tatum)/02%3A_Electrostatic_Potential/2.03%3A_Electron-volts

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