The electronvolt eV is a physical unit of energy E. The electronvolt is not an SI unit.
The electron volt is defined as the energy in the form of kinetic energy that a particle with the elementary charge 1 e receives when it is accelerated along a potential of one volt.
| Electron volt | ||
|---|---|---|
| Symbol: | eV | |
| Value: | 1.602176634 × 10-19 | J |
| Standard uncertainty: | exact | |
| Relative standard uncertainty: | exact | |
| Electron volt - atomic mass unit | 1 eV/c2 | = | 1.07354410083(33) × 10-9 | u |
| Electron volt - hartree | 1 eV | = | 3.6749322175665(40) × 10-2 | Eh |
| Electron volt - hertz | 1 eV/h | = | 2.417989242 ... × 1014 | Hz |
| Electron volt - inverse meter | 1 eV/hc | = | 8.065543937 ... × 105 | m-1 |
| Electron volt - kelvin | 1 eV/k | = | 1.160451812.. × 104 | K |
| Electron volt - kilogram | 1 eV/c2 | = | 1.782661921 ... × 10-36 | kg |
| Electron volt - kilojoule | 1 eV | = | 1.602176634 ... × 10-22 | kJ |
[1] - Electron Volt
The NIST Reference on Constants, Units, and Uncertainty: CODATA Values of Fundamental Constants 2022.
Last update: 2024-09-02
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