Convert joules to electronvolts
1 J = 6.2415 × 10^18 eV. Change the amount below, or read the formula and the reference table further down.
1 joule equals
electronvolts
1 J = 6.2415 × 10^18 eV
The formula
Joules and electronvolts both measure energy from the same zero, so a single multiplier does the job.
eV = J × 6.2415 × 10^18
Going the other way? Convert electronvolts to joules.
Joules to electronvolts table
Common values, rounded for reading.
| Joules (J) | Electronvolts (eV) |
|---|---|
| 1 | 6.2415 × 10^18 |
| 2 | 1.2483 × 10^19 |
| 3 | 1.8725 × 10^19 |
| 4 | 2.4966 × 10^19 |
| 5 | 3.1208 × 10^19 |
| 6 | 3.7449 × 10^19 |
| 7 | 4.3691 × 10^19 |
| 8 | 4.9932 × 10^19 |
| 9 | 5.6174 × 10^19 |
| 10 | 6.2415 × 10^19 |
| 15 | 9.3623 × 10^19 |
| 20 | 1.2483 × 10^20 |
| 25 | 1.5604 × 10^20 |
| 30 | 1.8725 × 10^20 |
| 40 | 2.4966 × 10^20 |
| 50 | 3.1208 × 10^20 |
| 75 | 4.6811 × 10^20 |
| 100 | 6.2415 × 10^20 |
| 250 | 1.5604 × 10^21 |
| 500 | 3.1208 × 10^21 |
| 1,000 | 6.2415 × 10^21 |
Questions people ask
- How many electronvolts are in a joule?
- One joule equals 6.2415 × 10^18 electronvolts.
- How do I convert joules to electronvolts by hand?
- Multiply the number of joules by 6.2415 × 10^18. For a rough check, 6.2415 × 10^18 is close enough for most everyday use.
- What is 1 joule in electronvolts?
- 1 joule is 6.2415 × 10^18 electronvolts.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.