Calories to Electronvolts Converter
Convert calories (cal) to electronvolts (eV)
Result
1 cal = 2.6114474 × 10¹⁹ eV
1 cal in other units
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How to convert calories to electronvolts
One calorie equals 2.611447 × 10¹⁹ electronvolts, so multiply the number of calories by 2.611447 × 10¹⁹.
eV = cal × 2.611447 × 10¹⁹
1 cal = 2.611447 × 10¹⁹ eV · 1 eV = 3.829294 × 10⁻²⁰ cal
Worked example
To convert 5 calories to electronvolts: 5 cal × 2.611447 × 10¹⁹ = 1.305724 × 10²⁰ eV.
About calories (cal)
A (small) calorie is 4.184 J, the energy to warm 1 g of water by 1 °C. Food “Calories” are actually kilocalories.
About electronvolts (eV)
An electronvolt is the energy an electron gains across one volt, used in atomic and particle physics.
More conversions
Calories to other units
Frequently asked questions
How many electronvolts are in one calorie?
One calorie equals 2.611447 × 10¹⁹ electronvolts.
How many calories are in one electronvolt?
One electronvolt equals 3.829294 × 10⁻²⁰ calories.
How do I convert calories to electronvolts?
Use the formula eV = cal × 2.611447 × 10¹⁹. For example, 5 cal × 2.611447 × 10¹⁹ = 1.305724 × 10²⁰ eV.