Joules to Electronvolts
Convert J to eV. 1 joule = 6.241509e+18 eV, and 1 electronvolt = 1.602177e-19 J.
Formula Multiply the value in joules by 6.241509e+18. Joules to Electronvolts table
1 joule in every unit
| Kilojoules | 0.001 | kJ |
|---|---|---|
| Megajoules | 0.000001 | MJ |
| Calories | 0.239005736138 | cal |
| Kilocalories | 0.000239005736 | kcal |
| Watt-hours | 0.000277777778 | Wh |
| Kilowatt-hours | 0.000000277778 | kWh |
| British thermal units | 0.00094781712 | BTU |
| Foot-pounds | 0.737562149277 | ft·lbf |
| Electronvolts | 6.241509e+18 | eV |
Food labels write kilocalories (kcal) as "Calories". Calories here are thermochemical: 1 cal = 4.184 J.
How to convert joules to electronvolts
Multiply the value in joules by 6.241509e+18.
For example, 10 J = 6.241509e+19 eV, and 10 eV = 1.602177e-18 J.
Frequently asked questions
How many electronvolts are in one joule?
1 joule = 6.241509e+18 eV.
What is 10 J in eV?
10 J = 6.241509e+19 eV.
How do I convert eV back to J?
Divide the value in electronvolts by 6.241509e+18. 1 electronvolt = 1.602177e-19 J.
Joules to Electronvolts table
| Joules (J) | Electronvolts (eV) |
|---|---|
| 0.1 | 6.241509e+17 |
| 0.5 | 3.120755e+18 |
| 1 | 6.241509e+18 |
| 2 | 1.248302e+19 |
| 3 | 1.872453e+19 |
| 4 | 2.496604e+19 |
| 5 | 3.120755e+19 |
| 6 | 3.744905e+19 |
| 7 | 4.369056e+19 |
| 8 | 4.993207e+19 |
| 9 | 5.617358e+19 |
| 10 | 6.241509e+19 |
| 15 | 9.362264e+19 |
| 20 | 1.248302e+20 |
| 25 | 1.560377e+20 |
| 30 | 1.872453e+20 |
| 50 | 3.120755e+20 |
| 75 | 4.681132e+20 |
| 100 | 6.241509e+20 |
| 250 | 1.560377e+21 |
| 500 | 3.120755e+21 |
| 1,000 | 6.241509e+21 |
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