Convert Kilocalories (kcal) to Electronvolts (eV)
Enter a value below to convert Kilocalories (kcal) to Electronvolts (eV).
Conversion:
1 Kilocalories (kcal) = 2.6114473968e+22 Electronvolts (eV)
How to Convert Kilocalories (kcal) to Electronvolts (eV)
1 kcal = 2.6114473968e+22 ev
1 ev = 3.8292940583e-23 kcal
Example: convert 15 Kilocalories (kcal) to Electronvolts (eV):
25 kcal = 6.5286184919e+23 ev
Kilocalories (kcal) to Electronvolts (eV) Conversion Table
| Kilocalories (kcal) | Electronvolts (eV) |
|---|---|
| 0.01 kcal | 261144739679999980000 ev |
| 0.1 kcal | 2.6114473968e+21 ev |
| 1 kcal | 2.6114473968e+22 ev |
| 2 kcal | 5.2228947935000005e+22 ev |
| 3 kcal | 7.8343421903e+22 ev |
| 5 kcal | 1.3057236984e+23 ev |
| 10 kcal | 2.6114473968e+23 ev |
| 20 kcal | 5.2228947935e+23 ev |
| 50 kcal | 1.3057236984e+24 ev |
| 100 kcal | 2.6114473968e+24 ev |
| 1000 kcal | 2.6114473967999996e+25 ev |
Kilocalories (kcal)
Definition
A kilocalorie (kcal), also known as a food calorie or large calorie, equals 1,000 small calories or approximately 4,184 joules. It is the standard unit for measuring dietary energy.
History
The kilocalorie became the standard unit for food energy labeling in the United States and many other countries during the 20th century. Nutritionist Wilbur Olin Atwater pioneered its use in dietary science.
Current use
Kilocalories are the primary unit for food energy on nutrition labels in the US, Canada, and much of Asia. They are also used in exercise science, dietetics, and metabolic rate calculations.
Electronvolts (eV)
Definition
An electronvolt (eV) is a unit of energy equal to the amount of kinetic energy gained by a single electron when accelerated through an electric potential difference of one volt. It equals approximately 1.602 × 10⁻¹⁹ joules.
History
The electronvolt emerged in the early 20th century with the development of particle physics and quantum mechanics. It provided a practical unit for describing atomic and subatomic energy scales.
Current use
Electronvolts are the standard unit in particle physics, nuclear physics, semiconductor physics, and quantum chemistry for expressing binding energies, photon energies, and particle masses.