Electronvolts to joules converter
Joules (J)
1 electronvolt = 1.602177e-19 joules
How to convert electronvolts to joules
J = eV × 1.602176634 × 10^-19
Multiply the number of electronvolts by 1.602176634 × 10^-19 to get joules. Going the other way, divide by 1.602176634 × 10^-19 (or multiply by 6.24150907446 × 10^18).
One electronvolt is exactly defined as 1.602176634 × 10^-19 joules (to 12 significant figures), and one joule is 6.24150907446 × 10^18 electronvolts.
Worked examples
- Convert 5 electronvolts: 5 × 1.602176634 × 10^-19 = 8.010883e-19 8.010883e-19 joules.
- Convert 12.5 electronvolts: 12.5 × 1.602176634 × 10^-19 = 2.002721e-18 2.002721e-18 joules.
- Convert 250 electronvolts: 250 × 1.602176634 × 10^-19 = 4.005442e-17 4.005442e-17 joules.
Quick-reference table
| eV | J |
|---|---|
| 1 | 1.602177e-19 |
| 2 | 3.204353e-19 |
| 3 | 4.80653e-19 |
| 5 | 8.010883e-19 |
| 10 | 1.602177e-18 |
| 15 | 2.403265e-18 |
| 20 | 3.204353e-18 |
| 25 | 4.005442e-18 |
| 50 | 8.010883e-18 |
| 75 | 1.201632e-17 |
| 100 | 1.602177e-17 |
| 1,000 | 1.602177e-16 |
| J | eV |
|---|---|
| 1 | 6.241509e+18 |
| 2 | 1.248302e+19 |
| 3 | 1.872453e+19 |
| 5 | 3.120755e+19 |
| 10 | 6.241509e+19 |
| 15 | 9.362264e+19 |
| 20 | 1.248302e+20 |
| 25 | 1.560377e+20 |
| 50 | 3.120755e+20 |
| 75 | 4.681132e+20 |
| 100 | 6.241509e+20 |
| 1,000 | 6.241509e+21 |
Related conversions
Frequently asked questions
How many joules are in 1 electronvolt?
1 electronvolt equals 1.602177e-19 joules.
What is the formula to convert electronvolts to joules?
Use J = eV × 1.602176634 × 10^-19. Multiply the number of electronvolts by 1.602176634 × 10^-19 to get joules. Going the other way, divide by 1.602176634 × 10^-19 (or multiply by 6.24150907446 × 10^18).
What is 100 electronvolts in joules?
100 electronvolts is 1.602177e-17 joules.