Convert Electronvolt to Calorie
Enter the number of electronvolts that you want to convert to calories.
How to Convert Electronvolts to Calories
The electronvolt and calorie are both units of energy. By definition, 1 calorie equals exactly 2.6114473968e19 electronvolts. This means to convert electronvolts to calories, you divide by 2.6114473968e19.
Formula
Step-by-Step Example
Convert 5 eV to calories:
We need to convert electronvolts to calories
Since 1 cal = 2.6114473968e19 eV, divide by 2.6114473968e19
5 ÷ 2.6114473968e19 = 1.9146470292e-19
5 eV = 1.9146470292e-19 cal
Electronvolt to Calorie Conversion Table
Quick reference table for common electronvolt to calorie conversions. Click any value for detailed calculation.
| Electronvolts (eV) | Calories (cal) |
|---|---|
| 0.1 eV | 3.8292940583e-21 cal |
| 0.5 eV | 1.9146470292e-20 cal |
| 1 eV | 3.8292940583e-20 cal |
| 2 eV | 7.6585881166e-20 cal |
| 5 eV | 1.9146470292e-19 cal |
| 10 eV | 3.8292940583e-19 cal |
| 25 eV | 9.5732351458e-19 cal |
| 50 eV | 1.9146470292e-18 cal |
| 100 eV | 3.8292940583e-18 cal |
About These Units
Electronvolt (eV)
An electronvolt (eV) is the energy gained by an electron accelerated through 1 volt potential difference, equal to 1.602×10⁻¹⁹ joules. Electronvolts measure atomic and molecular energies, photon energy (visible light: 1.6-3.3 eV), and particle physics. X-rays range from 100 eV to 100 keV.
Calorie (cal)
A small calorie (cal) is the energy needed to raise 1 gram of water by 1°C, equal to 4.184 joules. Small calories are used in chemistry and physics. Note: food "Calories" (with capital C) are actually kilocalories. One calorie equals 0.003968 BTU.
Frequently Asked Questions
How do I convert electronvolts to calories?
To convert electronvolts to calories, divide the value by 2.6114473968e19. For example, 10 eV = 3.8292940583e-19 cal.
How many calories are in 1 electronvolt?
1 electronvolt equals 3.8292940583e-20 calories.
What is the formula for electronvolts to calories?
The formula is: cal = eV ÷ 2.6114473968e19.