Electronvolts to Joules
Convert eV to J. 1 electronvolt = 1.602177e-19 J, and 1 joule = 6.241509e+18 eV.
Formula Divide the value in electronvolts by 6.241509e+18. Electronvolts to Joules table
1 electronvolt in every unit
| Joules | 1.602177e-19 | J |
|---|---|---|
| Kilojoules | 1.602177e-22 | kJ |
| Megajoules | 1.602177e-25 | MJ |
| Calories | 3.829294e-20 | cal |
| Kilocalories | 3.829294e-23 | kcal |
| Watt-hours | 4.450491e-23 | Wh |
| Kilowatt-hours | 4.450491e-26 | kWh |
| British thermal units | 1.51857e-22 | BTU |
| Foot-pounds | 1.181705e-19 | ft·lbf |
Food labels write kilocalories (kcal) as "Calories". Calories here are thermochemical: 1 cal = 4.184 J.
How to convert electronvolts to joules
Divide the value in electronvolts by 6.241509e+18.
For example, 10 eV = 1.602177e-18 J, and 10 J = 6.241509e+19 eV.
Frequently asked questions
How many joules are in one electronvolt?
1 electronvolt = 1.602177e-19 J.
What is 10 eV in J?
10 eV = 1.602177e-18 J.
How do I convert J back to eV?
Multiply the value in joules by 6.241509e+18. 1 joule = 6.241509e+18 eV.
Electronvolts to Joules table
| Electronvolts (eV) | Joules (J) |
|---|---|
| 0.1 | 1.602177e-20 |
| 0.5 | 8.010883e-20 |
| 1 | 1.602177e-19 |
| 2 | 3.204353e-19 |
| 3 | 4.80653e-19 |
| 4 | 6.408707e-19 |
| 5 | 8.010883e-19 |
| 6 | 9.61306e-19 |
| 7 | 1.121524e-18 |
| 8 | 1.281741e-18 |
| 9 | 1.441959e-18 |
| 10 | 1.602177e-18 |
| 15 | 2.403265e-18 |
| 20 | 3.204353e-18 |
| 25 | 4.005442e-18 |
| 30 | 4.80653e-18 |
| 50 | 8.010883e-18 |
| 75 | 1.201632e-17 |
| 100 | 1.602177e-17 |
| 250 | 4.005442e-17 |
| 500 | 8.010883e-17 |
| 1,000 | 1.602177e-16 |
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