A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels.
Kilocalories to Electronvolts
Convert Kilocalorie (kcal) to Electronvolt (eV) instantly with an exact formula, conversion table, and FAQ.
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Convert kilocalories (kcal) to electronvolts (eV) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
An electronvolt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, widely used in atomic and particle physics.
eV = kcal × 2.611447397e+22
Results update instantly for Kilocalories to Electronvolts conversions.
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Formula
eV = kcal × 2.611447397e+22
kcal = eV × 3.829294058e-23
Conversion table
| 1 kcal | 2.611447e+22 eV |
| 5 kcal | 1.305724e+23 eV |
| 10 kcal | 2.611447e+23 eV |
| 20 kcal | 5.222895e+23 eV |
| 50 kcal | 1.305724e+24 eV |
| 100 kcal | 2.611447e+24 eV |
| 500 kcal | 1.305724e+25 eV |
| 1000 kcal | 2.611447e+25 eV |
Related conversions
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How the formula works
Both kilocalorie and electronvolt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in kilocalories by 2.611447397e+22 to get electronvolts. To reverse the conversion, multiply a electronvolt value by 3.829294058e-23 to get back to kilocalories.
Frequently asked questions
What is Kilocalorie (kcal)?
A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels.
What is Electronvolt (eV)?
An electronvolt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, widely used in atomic and particle physics.
How do I convert kilocalories to electronvolts?
Multiply the kilocalorie value by 2.611447397e+22 to get the equivalent in electronvolts. For example, 5 kcal × 2.611447397e+22 = 1.305724e+23 eV.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 2.611447397e+22 is an exact, non-rounded value.
Can I convert electronvolts back to kilocalories?
Yes. Divide the electronvolt value by 2.611447397e+22, or multiply it by 3.829294058e-23, to get kilocalories.
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About converting kilocalories to electronvolts
A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels. An electronvolt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, widely used in atomic and particle physics.
Use this calculator to move between kilocalories and electronvolts accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.