Convert joule to electronvolt
Enter the value to convert from joule to electronvolt.
How to Convert Joule to Electronvolt
Converting joule to electronvolt is straightforward using our conversion calculator.
Conversion Formula
eV = J × 6.24150907446E18Reverse conversion: Convert electronvolt to joule
Comparison: Joule vs Electronvolt
When to Use Each Unit
Joule: Universal scientific unit for all forms of energy: mechanical, electrical, thermal, chemical, and nuclear energy worldwide.
Electronvolt: Standard unit in atomic physics, nuclear physics, particle physics, and quantum mechanics research.
Common Conversion Values
- 1000 J = 1 kJ
- 1 J ≈ 0.239 cal
- 3,600,000 J = 1 kWh
- 1 J ≈ 0.738 ft⋅lbf
About Joule
Definition: The joule (symbol: J) is the SI unit of energy, equal to the energy expended when applying one newton of force through one meter of distance.
History: Named after English physicist James Prescott Joule in 1889. Established the mechanical equivalent of heat and energy conservation.
Current Use: Universal scientific unit for all forms of energy: mechanical, electrical, thermal, chemical, and nuclear energy worldwide.
Examples: Apple: 350,000 J, car battery: 4.3 MJ, lightning bolt: 1-5 billion J, human daily intake: 8-10 MJ
About Electronvolt
Definition: The electronvolt (symbol: eV) is the kinetic energy gained by an electron accelerated through one volt of electric potential.
History: Defined in atomic physics and particle physics for measuring very small energies at atomic and subatomic scales.
Current Use: Standard unit in atomic physics, nuclear physics, particle physics, and quantum mechanics research.
Examples: Chemical bonds: 1-10 eV, X-rays: 100 eV-100 keV, nuclear reactions: 1-10 MeV, particle accelerators: GeV-TeV