Electronvolt (eV) to Joule (J)
1 eV = 1.6022e-19 J · Free instant converter, no signup required.
Direct Answer
1 eV = 1.6022e-19 J
Formula: J = eV × 1.6022e-19. This page supports instant conversion, reference table checks, and related unit links.
About this conversion
This Koverts page converts electronvolts (eV) to joules (J) — bridging particle physics and SI classroom energy.
The electronvolt is the energy one electron gains across one volt — the natural unit for atomic bonds, band gaps, and accelerator beams.
The joule is the SI unit for all macroscopic energy accounting — electricity bills, heat capacity labs, and mechanical work.
Typical uses
- Semiconductor band-gap comparisons
- Photon energy from wavelength (with h)
- Particle physics cross-section papers
Common reference values
- 1 eV = 1.6022e-19 J
- 10 eV = 1.6022e-18 J
- 100 eV = 1.6022e-17 J
Tip: Multiply electronvolts by 1.602176634×10⁻¹⁹ to get joules — the CODATA exact definition since 2019.
Educational reference — always verify critical measurements (medical, engineering, legal) with primary sources.
// electronvolt Conversion table joule
| Electronvolt (eV) (eV) | Joule (J) (J) |
|---|---|
| 1 eV | 1.6022e-19 J |
| 2 eV | 3.2044e-19 J |
| 5 eV | 8.0109e-19 J |
| 10 eV | 1.6022e-18 J |
| 20 eV | 3.2044e-18 J |
| 25 eV | 4.0054e-18 J |
| 50 eV | 8.0109e-18 J |
| 100 eV | 1.6022e-17 J |
| 250 eV | 4.0055e-17 J |
| 500 eV | 8.0109e-17 J |
| 1000 eV | 1.6022e-16 J |
How to convert
Electronvolt (eV) → Joule (J)
To convert from Electronvolt (eV) (eV) to Joule (J) (J)，multiply your value by 1.6022e-19.
For example，10 eV = 1.6022e-18 J.
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