Electronvolts to Calories Converter
Convert electronvolts (eV) to calories (cal)
Result
1 eV = 3.8292941 × 10⁻²⁰ cal
1 eV in other units
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How to convert electronvolts to calories
There are 2.611447 × 10¹⁹ electronvolts in one calorie, so divide the number of electronvolts by 2.611447 × 10¹⁹.
cal = eV ÷ 2.611447 × 10¹⁹
1 eV = 3.829294 × 10⁻²⁰ cal · 1 cal = 2.611447 × 10¹⁹ eV
Worked example
To convert 5 electronvolts to calories: 5 eV ÷ 2.611447 × 10¹⁹ = 1.914647 × 10⁻¹⁹ cal.
About electronvolts (eV)
An electronvolt is the energy an electron gains across one volt, used in atomic and particle physics.
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.
More conversions
Electronvolts to other units
Frequently asked questions
How many calories are in one electronvolt?
One electronvolt equals 3.829294 × 10⁻²⁰ calories.
How many electronvolts are in one calorie?
One calorie equals 2.611447 × 10¹⁹ electronvolts.
How do I convert electronvolts to calories?
Use the formula cal = eV ÷ 2.611447 × 10¹⁹. For example, 5 eV ÷ 2.611447 × 10¹⁹ = 1.914647 × 10⁻¹⁹ cal.