Electronvolts to kilojoules converter
Kilojoules (kJ)
1 electronvolt = 1.602177e-22 kilojoules
How to convert electronvolts to kilojoules
kJ = eV × 1.602176634 × 10^-22
Multiply the number of electronvolts by 1.602176634 × 10^-22 to get kilojoules. Going the other way, divide by 1.602176634 × 10^-22 (or multiply by 6.24150907446 × 10^21).
One electronvolt is exactly defined as 1.602176634 × 10^-22 kilojoules (to 12 significant figures), and one kilojoule is 6.24150907446 × 10^21 electronvolts.
Worked examples
- Convert 5 electronvolts: 5 × 1.602176634 × 10^-22 = 8.010883e-22 8.010883e-22 kilojoules.
- Convert 12.5 electronvolts: 12.5 × 1.602176634 × 10^-22 = 2.002721e-21 2.002721e-21 kilojoules.
- Convert 250 electronvolts: 250 × 1.602176634 × 10^-22 = 4.005442e-20 4.005442e-20 kilojoules.
Quick-reference table
| eV | kJ |
|---|---|
| 1 | 1.602177e-22 |
| 2 | 3.204353e-22 |
| 3 | 4.80653e-22 |
| 5 | 8.010883e-22 |
| 10 | 1.602177e-21 |
| 15 | 2.403265e-21 |
| 20 | 3.204353e-21 |
| 25 | 4.005442e-21 |
| 50 | 8.010883e-21 |
| 75 | 1.201632e-20 |
| 100 | 1.602177e-20 |
| 1,000 | 1.602177e-19 |
| kJ | eV |
|---|---|
| 1 | 6.241509e+21 |
| 2 | 1.248302e+22 |
| 3 | 1.872453e+22 |
| 5 | 3.120755e+22 |
| 10 | 6.241509e+22 |
| 15 | 9.362264e+22 |
| 20 | 1.248302e+23 |
| 25 | 1.560377e+23 |
| 50 | 3.120755e+23 |
| 75 | 4.681132e+23 |
| 100 | 6.241509e+23 |
| 1,000 | 6.241509e+24 |
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Frequently asked questions
How many kilojoules are in 1 electronvolt?
1 electronvolt equals 1.602177e-22 kilojoules.
What is the formula to convert electronvolts to kilojoules?
Use kJ = eV × 1.602176634 × 10^-22. Multiply the number of electronvolts by 1.602176634 × 10^-22 to get kilojoules. Going the other way, divide by 1.602176634 × 10^-22 (or multiply by 6.24150907446 × 10^21).
What is 100 electronvolts in kilojoules?
100 electronvolts is 1.602177e-20 kilojoules.