Convert Calories to Electronvolts

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

Results in Electronvolts:
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1 cal = 2.6114E+19 eV

How to Convert Calories to Electronvolts

To convert a calorie measurement to a electronvolt measurement, multiply the energy by the conversion ratio. One calorie is equal to 2.6114E+19 electronvolts, so use this simple formula to convert:

electronvolts = calories × 2.6114E+19

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

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

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


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.


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.

Calorie Measurements and Equivalent Electronvolt Conversions

Common calorie values converted to the equivalent electronvolt value
Calories Electronvolts
1 cal 26,114,000,000,000,000,000 eV
2 cal 52,229,000,000,000,000,000 eV
3 cal 78,343,000,000,000,000,000 eV
4 cal 104,460,000,000,000,000,000 eV
5 cal 130,570,000,000,000,000,000 eV
6 cal 156,690,000,000,000,000,000 eV
7 cal 182,800,000,000,000,000,000 eV
8 cal 208,920,000,000,000,000,000 eV
9 cal 235,030,000,000,000,000,000 eV
10 cal 261,140,000,000,000,000,000 eV
11 cal 287,260,000,000,000,000,000 eV
12 cal 313,370,000,000,000,000,000 eV
13 cal 339,490,000,000,000,000,000 eV
14 cal 365,600,000,000,000,000,000 eV
15 cal 391,720,000,000,000,000,000 eV
16 cal 417,830,000,000,000,000,000 eV
17 cal 443,950,000,000,000,000,000 eV
18 cal 470,060,000,000,000,000,000 eV
19 cal 496,180,000,000,000,000,000 eV
20 cal 522,290,000,000,000,000,000 eV
21 cal 548,400,000,000,000,000,000 eV
22 cal 574,520,000,000,000,000,000 eV
23 cal 600,630,000,000,000,065,536 eV
24 cal 626,750,000,000,000,065,536 eV
25 cal 652,860,000,000,000,000,000 eV
26 cal 678,980,000,000,000,000,000 eV
27 cal 705,089,999,999,999,934,464 eV
28 cal 731,209,999,999,999,934,464 eV
29 cal 757,320,000,000,000,000,000 eV
30 cal 783,430,000,000,000,065,536 eV
31 cal 809,550,000,000,000,065,536 eV
32 cal 835,660,000,000,000,000,000 eV
33 cal 861,780,000,000,000,000,000 eV
34 cal 887,889,999,999,999,934,464 eV
35 cal 914,009,999,999,999,934,464 eV
36 cal 940,120,000,000,000,000,000 eV
37 cal 966,240,000,000,000,000,000 eV
38 cal 992,350,000,000,000,065,536 eV
39 cal 1,018,500,000,000,000,000,000 eV
40 cal 1,044,600,000,000,000,000,000 eV

More Calorie Energy Conversions

Convert to Joules
1 cal is equal to 4.184 joules
Convert to Kilojoules
1 cal is equal to 0.004184 kilojoules
Convert to Megajoules
1 cal is equal to 4.184E-6 megajoules
Convert to Gigajoules
1 cal is equal to 4.184E-9 gigajoules
Convert to Kilocalories
1 cal is equal to 0.001 kilocalories
Convert to Megacalories
1 cal is equal to 1.0E-6 megacalories
Watts x Time
Convert to Watt-hours
1 cal is equal to 0.001162 watt-hours
Convert to Kilowatt-hours
1 cal is equal to 1.1622E-6 kilowatt-hours
Convert to Megawatt-hours
1 cal is equal to 1.1622E-9 megawatt-hours
Convert to Watt-seconds
1 cal is equal to 4.184 watt-seconds
Thermal Units
Convert to British Thermal Units
1 cal is equal to 0.003966 british thermal units
Convert to Million BTU
1 cal is equal to 3.9657E-9 million BTU
Convert to Therms
1 cal is equal to 3.9657E-8 therms
Convert to Quads
1 cal is equal to 3.9657E-18 quads
Convert to Kiloelectronvolts
1 cal is equal to 26,114,000,000,000,000 kiloelectronvolts
Convert to Megaelectronvolts
1 cal is equal to 26,114,475,092,200.6 megaelectronvolts