Convert Electronvolts to Calories

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

Results in Calories:
Loading content.
1 eV = 3.8293E-20 cal

How to Convert Electronvolts to Calories

To convert a electronvolt measurement to a calorie measurement, multiply the energy by the conversion ratio. One electronvolt is equal to 3.8293E-20 calories, so 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 electronvolts to calories using the formula above.
5 eV = (5 × 3.8293E-20) = 1.9146E-19 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 Measurements and Equivalent Calorie Conversions

Common electronvolt values converted to the equivalent calorie value
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
11 eV 0.00000000000000000042122 cal
12 eV 0.00000000000000000045952 cal
13 eV 0.00000000000000000049781 cal
14 eV 0.0000000000000000005361 cal
15 eV 0.00000000000000000057439 cal
16 eV 0.00000000000000000061269 cal
17 eV 0.00000000000000000065098 cal
18 eV 0.00000000000000000068927 cal
19 eV 0.00000000000000000072757 cal
20 eV 0.00000000000000000076586 cal
21 eV 0.00000000000000000080415 cal
22 eV 0.00000000000000000084244 cal
23 eV 0.00000000000000000088074 cal
24 eV 0.00000000000000000091903 cal
25 eV 0.00000000000000000095732 cal
26 eV 0.00000000000000000099562 cal
27 eV 0.0000000000000000010339 cal
28 eV 0.0000000000000000010722 cal
29 eV 0.0000000000000000011105 cal
30 eV 0.0000000000000000011488 cal
31 eV 0.0000000000000000011871 cal
32 eV 0.0000000000000000012254 cal
33 eV 0.0000000000000000012637 cal
34 eV 0.000000000000000001302 cal
35 eV 0.0000000000000000013403 cal
36 eV 0.0000000000000000013785 cal
37 eV 0.0000000000000000014168 cal
38 eV 0.0000000000000000014551 cal
39 eV 0.0000000000000000014934 cal
40 eV 0.0000000000000000015317 cal

More Electronvolt Energy Conversions

Convert to Joules
1 eV is equal to 1.6022E-19 joules
Convert to Kilojoules
1 eV is equal to 1.6022E-22 kilojoules
Convert to Megajoules
1 eV is equal to 1.6022E-25 megajoules
Convert to Gigajoules
1 eV is equal to 1.6022E-28 gigajoules
Convert to Kilocalories
1 eV is equal to 3.8293E-23 kilocalories
Convert to Megacalories
1 eV is equal to 3.8293E-26 megacalories
Watts x Time
Convert to Watt-hours
1 eV is equal to 4.4505E-23 watt-hours
Convert to Kilowatt-hours
1 eV is equal to 4.4505E-26 kilowatt-hours
Convert to Megawatt-hours
1 eV is equal to 4.4505E-29 megawatt-hours
Convert to Watt-seconds
1 eV is equal to 1.6022E-19 watt-seconds
Thermal Units
Convert to British Thermal Units
1 eV is equal to 1.5186E-22 british thermal units
Convert to Million BTU
1 eV is equal to 1.5186E-28 million BTU
Convert to Therms
1 eV is equal to 1.5186E-27 therms
Convert to Quads
1 eV is equal to 1.5186E-37 quads
Convert to Kiloelectronvolts
1 eV is equal to 0.001 kiloelectronvolts
Convert to Megaelectronvolts
1 eV is equal to 1.0E-6 megaelectronvolts