Convert electron-volt to joule
Please provide values below to convert electron-volt [eV] to joule [J], or Convert joule to electron-volt.
1 eV = 1.6022e-19 J. To convert electron-volt to joule, multiply the value by 1.6022e-19; to go the other way, divide by it (1 J = 6.2415e+18 eV). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 eV = 1.6022e-19 J
- 1 J = 6.2415e+18 eV
- 10 eV = 1.6022e-18 J
- 100 eV = 1.6022e-17 J
How to Convert Electron-Volt to Joule
1 eV = 1.602176634e-19 J
Example: convert 15 eV to J:
15 eV = 15 × 1.602176634e-19 J = 2.403264951e-18 J
Electron-Volt to Joule Conversion Table
| electron-volt | joule |
|---|---|
| 1 eV | 1.6022e-19 J |
| 2 eV | 3.2044e-19 J |
| 3 eV | 4.8065e-19 J |
| 5 eV | 8.0109e-19 J |
| 10 eV | 1.6022e-18 J |
| 20 eV | 3.2044e-18 J |
| 50 eV | 8.0109e-18 J |
| 100 eV | 1.6022e-17 J |
| 500 eV | 8.0109e-17 J |
| 1000 eV | 1.6022e-16 J |
Electron-Volt
An electron-volt (eV) is a unit of energy equal to the amount of kinetic energy gained or lost by an electron when it is accelerated through an electric potential difference of one volt.
History/Origin
The electron-volt was introduced in the early 20th century as a convenient unit for expressing atomic and subatomic energies, especially in quantum physics and particle physics, replacing larger units like the joule for small-scale energies.
Current Use
The electron-volt is widely used in physics and chemistry to quantify energies at the atomic and subatomic levels, such as in spectroscopy, particle physics, and quantum mechanics, due to its convenience in expressing small energy values.
Joule
The joule (J) is the SI unit of energy, work, and heat, defined as the work done when a force of one newton acts over a distance of one meter.
History/Origin
The joule was named after James Prescott Joule in 1889 to honor his work in energy and thermodynamics. It was adopted as the SI unit of energy in 1948.
Current Use
The joule is widely used in physics, engineering, and everyday contexts to quantify energy, work, and heat in various applications, including electricity, mechanics, and thermodynamics.
Frequently Asked Questions
What is 1 electron-volt in joule?
1 electron-volt (eV) = 1.6022e-19 joule (J).
How do you convert electron-volt to joule?
Multiply the electron-volt value by 1.6022e-19. For example, 25 eV × 1.6022e-19 = 4.0054e-18 J.
What is 10 electron-volt in joule?
10 eV = 1.6022e-18 J.
Which unit is larger, the electron-volt or the joule?
The joule is the larger unit: 1 eV equals only 1.6022e-19 J.