electronvolts to joules
1 eV = 1.602176634×10⁻¹⁹ J (exact); 1 J = 6.241509×10¹⁸ eV. To convert eV to joules, multiply by 1.602176634×10⁻¹⁹.
Conversion formula
1 eV = 1.602176634×10⁻¹⁹ J (exact); 1 J = 6.241509×10¹⁸ eV. To convert eV to joules, multiply by 1.602176634×10⁻¹⁹.
Conversion table
| 1 ev | 1.602177 ×10⁻¹⁹ |
|---|---|
| 5 ev | 8.010883 ×10⁻¹⁹ |
| 10 ev | 16.02177 ×10⁻¹⁹ |
| 25 ev | 40.05442 ×10⁻¹⁹ |
| 100 ev | 160.2177 ×10⁻¹⁹ |
Key facts
| 1 electronvolt | 1.602176634×10⁻¹⁹ J (exact) |
|---|---|
| 1 joule | 6.241509×10¹⁸ eV |
| 1 keV | 1.602176634×10⁻¹⁶ J |
| 1 MeV | 1.602176634×10⁻¹³ J |
Frequently asked questions
How many joules is 1 eV?
1 electronvolt equals exactly 1.602176634×10⁻¹⁹ joules, equal to the elementary charge in coulombs.
How do I convert eV to joules?
Multiply eV by 1.602176634×10⁻¹⁹. For example, 13.6 eV = 2.179×10⁻¹⁸ J.
Reverse conversion
Printable A4 conversion cheat sheet — see the Downloads page