Joules to Electronvolts
Convert joules to electronvolts for particle physics, atomic physics, photons, semiconductors, and quantum energy values.
How to convert J to eV
To convert a value from joules (J) to electronvolts (eV), enter the number in the converter above. Use the swap control if you need the reverse direction.
x is the source value in J; y is the result in eV.
Popular conversions
Quick answers for common J to eV values are available from the related conversion pages.
Use the related tools section for fixed-value conversions and the reverse direction.
Common conversion table
Quick reference table for common J to eV values:
| J | eV |
|---|---|
| 1 | 6.2415e+18 |
| 5 | 3.1208e+19 |
| 10 | 6.2415e+19 |
| 50 | 3.1208e+20 |
| 100 | 6.2415e+20 |
| 1,000 | 6.2415e+21 |
About joules
Joule (J) — The joule is the SI derived unit of energy. One joule is one watt-second.
Common uses: Joules are used in physics, chemistry, engineering, mechanics, heat energy, and SI energy specifications.
About electronvolts
Electronvolt (eV) — One electronvolt is exactly 1.602176634 x 10^-19 joules, based on the exact elementary charge.
Common uses: Electronvolts are used in particle physics, atomic physics, photon energy, semiconductor band gaps, and quantum-scale energy values.
Frequently Asked Questions
Related Tools
Convert electronvolts to joules for particle physics, atomic physics, photons, semiconductors, and quantum energy values.
Convert joules to thermochemical small calories for physics, chemistry, heat energy, and classroom unit checks.
Convert thermochemical small calories to joules for physics, chemistry, heat energy, and classroom unit checks.
Convert joules to kilowatt-hours for electricity bills, appliance energy consumption, batteries, and one kilowatt for one hour calculations.