Electronvolts to Calories Conversion

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

Results in Calories:
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1 eV = 3.8293E-20 cal
Hint: use a scientific notation calculator to convert E notation to decimal

How to Convert Electronvolts to Calories

To convert an electronvolt measurement to a calorie measurement, multiply the energy by the conversion ratio.

Since one electronvolt is equal to 3.8293E-20 calories, you can use this simple formula to convert:

calories = electronvolts × 3.8293E-20

The energy in calories is equal to the electronvolts multiplied by 3.8293E-20.

For example, here's how to convert 5.0E+19 electronvolts to calories using the formula above.
5.0E+19 eV = (5.0E+19 × 3.8293E-20) = 1.914647 cal

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


The electronvolt is a unit of energy used in physics, most commonly in electrostatic particle accelerator sciences.

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.


One calorie is equal to the heat needed to raise the temperature of one gram of water from 14.5 to 15.5 degrees Celsius.

When measuring the energy content in foods, the large calorie, or kilocalorie is used, but it's often still just called a "calorie." When both the calorie and large calorie are used in the same context it is common to refer to the calorie as a "small calorie."

Calories can be abbreviated as cal; for example, 1 calorie can be written as 1 cal.

Electronvolt to Calorie Conversion Table

Electronvolt measurements converted to calories
Electronvolts Calories
1 eV 0.000000000000000000038293 cal
2 eV 0.000000000000000000076586 cal
3 eV 0.00000000000000000011488 cal
4 eV 0.00000000000000000015317 cal
5 eV 0.00000000000000000019146 cal
6 eV 0.00000000000000000022976 cal
7 eV 0.00000000000000000026805 cal
8 eV 0.00000000000000000030634 cal
9 eV 0.00000000000000000034464 cal
10 eV 0.00000000000000000038293 cal
100 eV 0.0000000000000000038293 cal
1,000 eV 0.000000000000000038293 cal
10,000 eV 0.00000000000000038293 cal
100,000 eV 0.0000000000000038293 cal
1,000,000 eV 0.000000000000038293 cal
10,000,000 eV 0.00000000000038293 cal
100,000,000 eV 0.0000000000038293 cal
1,000,000,000 eV 0.000000000038293 cal
10,000,000,000 eV 0.00000000038293 cal
100,000,000,000 eV 0.0000000038293 cal
1,000,000,000,000 eV 0.000000038293 cal
10,000,000,000,000 eV 0.00000038293 cal
100,000,000,000,000 eV 0.0000038293 cal
1,000,000,000,000,000 eV 0.000038293 cal
10,000,000,000,000,000 eV 0.000383 cal
100,000,000,000,000,000 eV 0.003829 cal
1,000,000,000,000,000,000 eV 0.038293 cal
10,000,000,000,000,000,000 eV 0.382929 cal
100,000,000,000,000,000,000 eV 3.8293 cal

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