1 joule (J) = 6.241509e+18 electronvolts (eV). To convert, multiply by 6.241509e+18: eV = J × 6.241509e+18. For example, 5 J = 3.120755e+19 eV.
eV = J × 6.241509e+18
Joules to electronvolts table
| Joules (J) | Electronvolts (eV) |
|---|---|
| 1 | 6.241509e+18 |
| 2 | 1.248302e+19 |
| 3 | 1.872453e+19 |
| 4 | 2.496604e+19 |
| 5 | 3.120755e+19 |
| 10 | 6.241509e+19 |
| 20 | 1.248302e+20 |
| 25 | 1.560377e+20 |
| 50 | 3.120755e+20 |
| 100 | 6.241509e+20 |
| 250 | 1.560377e+21 |
| 500 | 3.120755e+21 |
| 1,000 | 6.241509e+21 |
The two units
Joule (J). The SI unit of energy: one newton acting over one meter.
Electronvolt (eV). The energy an electron gains across one volt; exactly 1.602176634 × 10⁻¹⁹ joules since 2019.
Convert joules to other units
- Joules to kilojoules — 1 J = 0.001 kJ
- Joules to calories — 1 J = 0.2390057361 cal
- Joules to kilocalories — 1 J = 0.0002390057 kcal
- Joules to watt-hours — 1 J = 0.0002777778 Wh
- Joules to kilowatt-hours — 1 J = 2.777778e-7 kWh
- Joules to British thermal units — 1 J = 0.0009478171 BTU
Convert other units to electronvolts
Questions people ask
- How many electronvolts are in a joule?
- 6.241509e+18.
- How do you convert joules to electronvolts?
- eV = J × 6.241509e+18. It is the same as dividing by 1.602177e-19.
- How do you convert electronvolts back to joules?
- J = eV ÷ 6.241509e+18. See electronvolts to joules.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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