How to convert electronvolts to joules
Formula: J = eV × 1.60218 × 10⁻¹⁹
Worked example: 10 eV → 10 × 1.60218 × 10⁻¹⁹ = 1.60218 × 10⁻¹⁸ J
Electronvolts to joules conversion chart
| Electronvolts (eV) | Joules (J) |
|---|---|
| 1 eV | 1.60218 × 10⁻¹⁹ J |
| 2 eV | 3.20435 × 10⁻¹⁹ J |
| 3 eV | 4.80653 × 10⁻¹⁹ J |
| 4 eV | 6.40871 × 10⁻¹⁹ J |
| 5 eV | 8.01088 × 10⁻¹⁹ J |
| 6 eV | 9.61306 × 10⁻¹⁹ J |
| 7 eV | 1.12152 × 10⁻¹⁸ J |
| 8 eV | 1.28174 × 10⁻¹⁸ J |
| 9 eV | 1.44196 × 10⁻¹⁸ J |
| 10 eV | 1.60218 × 10⁻¹⁸ J |
| 12 eV | 1.92261 × 10⁻¹⁸ J |
| 15 eV | 2.40326 × 10⁻¹⁸ J |
| 20 eV | 3.20435 × 10⁻¹⁸ J |
| 25 eV | 4.00544 × 10⁻¹⁸ J |
| 30 eV | 4.80653 × 10⁻¹⁸ J |
| 40 eV | 6.40871 × 10⁻¹⁸ J |
| 50 eV | 8.01088 × 10⁻¹⁸ J |
| 75 eV | 1.20163 × 10⁻¹⁷ J |
| 100 eV | 1.60218 × 10⁻¹⁷ J |
| 250 eV | 4.00544 × 10⁻¹⁷ J |
| 500 eV | 8.01088 × 10⁻¹⁷ J |
| 1,000 eV | 1.60218 × 10⁻¹⁶ J |
What is an electronvolt?
The electronvolt is the energy an electron gains across one volt, exactly 1.602176634 × 10⁻¹⁹ joule. Physicists and chemists use it for atoms, photons and particles; visible light photons carry about 2 to 3 eV.
What is a joule?
The joule is the SI unit of energy: the work done by a force of one newton over one meter, or one watt for one second. It is small; lifting an apple about one meter takes roughly one joule.