Calories to Electronvolts Converter

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


Result in Electronvolts:

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1 cal = 2.6114E+19 eV
Hint: use a scientific notation calculator to convert E notation to decimal

Do you want to convert electronvolts to calories?

How to Convert Calories to Electronvolts

To convert a measurement in calories to a measurement in electronvolts, multiply the energy by the following conversion ratio: 2.6114E+19 electronvolts/calorie.

Since one calorie is equal to 2.6114E+19 electronvolts, you can use this simple formula to convert:

electronvolts = calories × 2.6114E+19

The energy in electronvolts is equal to the energy in calories multiplied by 2.6114E+19.

For example, here's how to convert 5 calories to electronvolts using the formula above.
electronvolts = (5 cal × 2.6114E+19) = 1.3057E+20 eV

How Many Electronvolts Are in a Calorie?

There are 2.6114E+19 electronvolts in a calorie, which is why we use this value in the formula above.

1 cal = 2.6114E+19 eV

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

What Is a Calorie?

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.

Learn more about calories.

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.

Calorie to Electronvolt Conversion Table

Table showing various calorie measurements converted to electronvolts.
Calories Electronvolts
0.0000000000000000001 cal 2.6114 eV
0.0000000000000000002 cal 5.2229 eV
0.0000000000000000003 cal 7.8343 eV
0.0000000000000000004 cal 10.45 eV
0.0000000000000000005 cal 13.06 eV
0.0000000000000000006 cal 15.67 eV
0.0000000000000000007 cal 18.28 eV
0.0000000000000000008 cal 20.89 eV
0.0000000000000000009 cal 23.5 eV
0.00000000000000000001 cal 0.261145 eV
0.0000000000000000001 cal 2.6114 eV
0.000000000000000001 cal 26.11 eV
0.00000000000000001 cal 261.14 eV
0.0000000000000001 cal 2,611 eV
0.000000000000001 cal 26,114 eV
0.00000000000001 cal 261,145 eV
0.0000000000001 cal 2,611,448 eV
0.000000000001 cal 26,114,475 eV
0.00000000001 cal 261,144,751 eV
0.0000000001 cal 2,611,447,509 eV
0.000000001 cal 26,114,475,092 eV
0.00000001 cal 261,144,750,922 eV
0.0000001 cal 2,611,447,509,220 eV
0.000001 cal 26,114,475,092,201 eV
0.00001 cal 261,140,000,000,000 eV
0.0001 cal 2,611,400,000,000,000 eV
0.001 cal 26,114,000,000,000,000 eV
0.01 cal 261,140,000,000,000,000 eV
0.1 cal 2,611,400,000,000,000,000 eV
1 cal 26,114,000,000,000,000,000 eV


  1. Tatum, J., Electricity and Magnetism - 2.3: Electron-volts,

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