1 electronvolt = 1.60218e-19 joules
Convert electronvolts to joules.
Both directions on one page — swap the units and the whole thing runs backwards.
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The formula
J = eV × 1.60218e-19
Worked through with a real value: 10 electronvolts = 1.60218e-18 joules.
Going the other way: eV = J × 6.24151e+18, so 1 joule = 6.24151e+18 electronvolts.
What each unit is
- electronvolt eV
- The energy a single electron gains when accelerated through one volt, fundamental in particle physics and solid-state physics.
- joule J
- The SI unit of energy, equal to the work done by a force of one newton acting over a distance of one metre.
Where these come from
- 1 electronvolt = 1.602176634e-19 joules
Every other number on this page is computed from those, and each category is pinned to conversions worked out by hand from the units' primary definitions before it ships.
Conversion tables
| electronvolts (eV) | joules (J) |
|---|---|
| 1 | 1.60218e-19 |
| 2 | 3.20435e-19 |
| 3 | 4.80653e-19 |
| 4 | 6.40871e-19 |
| 5 | 8.01088e-19 |
| 6 | 9.61306e-19 |
| 7 | 1.12152e-18 |
| 8 | 1.28174e-18 |
| 9 | 1.44196e-18 |
| 10 | 1.60218e-18 |
| 20 | 3.20435e-18 |
| 25 | 4.00544e-18 |
| 50 | 8.01088e-18 |
| 75 | 1.20163e-17 |
| 100 | 1.60218e-17 |
| joules (J) | electronvolts (eV) |
|---|---|
| 1 | 6.24151e+18 |
| 2 | 1.24830e+19 |
| 3 | 1.87245e+19 |
| 4 | 2.49660e+19 |
| 5 | 3.12075e+19 |
| 6 | 3.74491e+19 |
| 7 | 4.36906e+19 |
| 8 | 4.99321e+19 |
| 9 | 5.61736e+19 |
| 10 | 6.24151e+19 |
| 20 | 1.24830e+20 |
| 25 | 1.56038e+20 |
| 50 | 3.12075e+20 |
| 75 | 4.68113e+20 |
| 100 | 6.24151e+20 |
Questions
How many joules are in a electronvolt?
1 electronvolt = 1.60218e-19 joules.
How do I convert electronvolts to joules?
Use J = eV × 1.60218e-19. For example, 10 electronvolts = 1.60218e-18 joules.
How many electronvolts are in one joule?
1 joule = 6.24151e+18 electronvolts.
What is 10 electronvolts in joules?
10 electronvolts = 1.60218e-18 joules.
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