Electronvolts to Joules (eV to J)
Free online electronvolt to joule converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
ENERGY CONVERTER — INSTANT RESULT
Formula: multiply the electronvolt value by 1.60218e-19 — i.e. J = eV × 1.60218e-19
Quick check: 1 eV = 1.60218e-19 J
Quick check: 1 eV = 1.60218e-19 J
Electronvolts to Joules conversion table
| Electronvolts (eV) | Joules (J) |
|---|---|
| 1 eV | 1.60218e-19 J |
| 2 eV | 3.20435e-19 J |
| 3 eV | 4.80653e-19 J |
| 4 eV | 6.40871e-19 J |
| 5 eV | 8.01088e-19 J |
| 6 eV | 9.61306e-19 J |
| 7 eV | 1.12152e-18 J |
| 8 eV | 1.28174e-18 J |
| 9 eV | 1.44196e-18 J |
| 10 eV | 1.60218e-18 J |
| 15 eV | 2.40326e-18 J |
| 20 eV | 3.20435e-18 J |
| 25 eV | 4.00544e-18 J |
| 30 eV | 4.80653e-18 J |
| 40 eV | 6.40871e-18 J |
| 50 eV | 8.01088e-18 J |
| 75 eV | 1.20163e-17 J |
| 100 eV | 1.60218e-17 J |
| 250 eV | 4.00544e-17 J |
| 500 eV | 8.01088e-17 J |
| 1,000 eV | 1.60218e-16 J |
How to convert electronvolts to joules
To convert electronvolts to joules, multiply the amount in electronvolts by 1.60218e-19. For example, 10 eV = 1.60218e-18 J. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between joules, calories, BTU, kilowatt-hours and foot-pounds. The joule is the SI unit of energy; the thermochemical calorie is defined as exactly 4.184 J.
Frequently asked questions
How many joules are in one electronvolt?
One electronvolt is exactly 1.60218e-19 joules.
How do I convert eV to J?
Multiply the eV value by 1.60218e-19 to get J. The converter at the top of this page does this automatically and works in both directions.
How much is 100 electronvolts in joules?
100 electronvolts equals 1.60218e-17 joules.