Electronvolts (eV) to Watt-hours (W·h) Conversion
Electronvolts
The electronvolt (eV) is a unit of energy equal to exactly 1.602176634 × 10⁻¹⁹ joules, defined as the kinetic energy gained by a single electron accelerated through a potential difference of one volt. It is the standard unit in particle physics, atomic physics, and solid-state physics. Visible light photons carry 1.8–3.1 eV of energy; X-ray photons carry 100 eV to 100 keV; the proton beams at CERN's LHC reach 6.5 teraelectronvolts (TeV).
Watt-hours
The watt-hour (W·h) is a unit of energy equal to exactly 3,600 joules, defined as the energy consumed by a one-watt device operating for one hour. It is used in electrical engineering and consumer electronics for expressing battery capacities: a smartphone battery typically holds 10–20 Wh. In aviation, aircraft battery capacities are specified in watt-hours for international transport regulations (lithium batteries above 100 Wh face restrictions).
| Electronvolts (eV) | Watt-hours (W·h) |
|---|---|
| 0.1 eV | 0.00000000000000000000000445 W·h |
| 1 eV | 0.0000000000000000000000445 W·h |
| 2 eV | 0.000000000000000000000089 W·h |
| 3 eV | 0.000000000000000000000134 W·h |
| 5 eV | 0.000000000000000000000223 W·h |
| 10 eV | 0.000000000000000000000445 W·h |
| 20 eV | 0.00000000000000000000089 W·h |
| 30 eV | 0.00000000000000000000134 W·h |
| 50 eV | 0.00000000000000000000223 W·h |
| 100 eV | 0.00000000000000000000445 W·h |
| 1000 eV | 0.0000000000000000000445 W·h |
Frequently Asked Questions (FAQ)
How many watt-hours are in 1 electronvolts?
1 electronvolts (eV) is exactly 0 watt-hours (W·h).
How do I convert electronvolts to watt-hours?
Multiply the value in electronvolts by 0 to get the result in watt-hours. Or use the converter above — type any number and see the result instantly.