- One joule is the amount of energy required to move an object with a force of one newton through a distance of one metre.
- One joule is the amount of energy dissipated as heat when one ampere of electric current flows through a resistance of one ohm for one second.
- The joule is a small unit of energy, so it is often used in multiples, such as kilojoules (kJ) or megajoules (MJ).
Electronvolt prefixes | Abbreviated units | Units to Electronvolts | eV to joules (J) |
|---|---|---|---|
| pico-electronvolt | peV | 1 peV = 1 x 10-12 (eV) | |
| nano-electronvolt | neV | 1 neV = 1 x 10-9 (eV) | |
| micro-electron | µeV | 1 µeV = 0.000001 (eV) | |
| milli-electronvolt | meV | 1 meV = 0.001 (eV) | |
| electronvolt | eV | 1 eV = 1 (eV) | |
| kilo-electronvolt | keV | 1 keV = 1,000 (eV) | |
| mega-electronvolt | MeV | 1 MeV = 1,000,000 (eV) | |
| giga-electronvolt | GeV | 1 GeV = 1,000,000,000 (eV) | 1 GeV = 1.60218 x 10-10 (J) |
| tera-electronvolt | TeV | 1 TeV = 1,000,000,000,000 (eV) | 1 TeV = 1.60218 x 10-7 (J) |
| peta-electronvolt | PeV | 1 PeV = 1 x 1015 (eV) | 1 PeV = 1.60218 x 10-4 (J) |
| exa-electronvolt | EeV | 1 EeV = 1 x 1018 (eV) | 1 EeV = 0.160218 (J) |
Related diagrams
Each diagram below can be viewed on its own page with a full explanation.
