eV to J
Convert Electronvolt to Joule
Convert Electronvolt to Joule instantly with the tool above. The conversion factor is 1.602177e-19, meaning 1 electronvolt equals 1.602177e-19 joules. Type any value and the result updates immediately — no ads, no page reloads, no clutter.
Type a number above. The result updates instantly — no buttons, no reloads.
1 Electronvolt = 1.602177e-19 joules
1 Joule = 6.241509e+18 electronvolts
Quick reference
Common electronvolts converted to joules at a glance.
| eV | J |
|---|---|
| 1 | 1.602177e-19 |
| 2 | 3.204353e-19 |
| 5 | 8.010883e-19 |
| 10 | 1.602177e-18 |
| 25 | 4.005442e-18 |
| 50 | 8.010883e-18 |
| 100 | 1.602177e-17 |
| 500 | 8.010883e-17 |
| 1,000 | 1.602177e-16 |
How to convert electronvolts to joules
To convert a value from electronvolts to joules, multiply the electronvolt value by 1.602177e-19 joules. For example, 10 electronvolts × that factor = 1.602177e-18 joules.
This electronvolt to joule converter runs entirely in your browser, so results appear instantly with no page reload, no advertisements and no sign-up.
Frequently asked questions
How many joules are in 1 electronvolt?+
1 electronvolt is equal to 1.602177e-19 joules.
How do you convert electronvolts to joules?+
To convert electronvolts to joules, multiply the electronvolt value by 1.602177e-19. For example, 10 electronvolts × 1.602177e-19 = 1.602177e-18 joules.
What is the formula to convert electronvolts to joules?+
Electronvolt → Joule: value × 1.602177e-19. Equivalently, 1 electronvolt = 1.602177e-19 joules.
Is this Electronvolt to Joule converter free to use?+
Yes. This electronvolt to joule converter is completely free, works instantly in your browser, and contains no advertisements, popups or sign-up.