Convert Electronvolt to Watt Hour
Use this free converter to change electronvolts (eV) into watt hours (Wh). Electronvolt and watt hour both measure energy. As a quick reference, 1 eV equals 4.4505e-23 Wh, and 1 Wh equals 2.2469e+22 eV.
Free · runs in your browser · no sign-up
Watt Hour (Wh)
4.4505e-23
1 eV = 4.4505e-23 Wh
Energy conversion table
| Electronvolt | Watt Hour |
|---|---|
| 0.01 | 4.4505e-25 |
| 0.1 | 4.4505e-24 |
| 0.5 | 2.2252e-23 |
| 1 | 4.4505e-23 |
| 2 | 8.9010e-23 |
| 3 | 1.3351e-22 |
| 5 | 2.2252e-22 |
| 10 | 4.4505e-22 |
| 20 | 8.9010e-22 |
| 25 | 1.1126e-21 |
| 50 | 2.2252e-21 |
| 100 | 4.4505e-21 |
| 1,000 | 4.4505e-20 |
How to convert Electronvolt to Watt Hour
Multiply the electronvolt value by 4.4505e-23 to get watt hours.
- Enter the number of electronvolts you want to convert.
- The converter instantly shows the equivalent value in watt hours.
- Worked example: 15 eV × 4.4505e-23 = 6.6757e-22 Wh.
- Use the swap button to reverse the conversion (watt hour to electronvolt).
About these units
Electronvolt (eV)
- Definition
- An electronvolt (eV) is the energy gained by an electron moving through a one-volt potential, a tiny amount of energy.
- History
- It became standard in atomic and particle physics in the 20th century.
- Current use
- Electronvolts measure energies of particles, photons, and chemical bonds.
Watt Hour (Wh)
- Definition
- A watt-hour (Wh) is the energy of one watt sustained for one hour, equal to 3,600 joules.
- History
- It arose with the electricity industry as a practical billing unit.
- Current use
- Watt-hours rate batteries and small energy stores.
Frequently asked questions
How many watt hours are in a electronvolt?
There are 4.4505e-23 Wh in 1 eV. To convert, multiply the number of electronvolts by 4.4505e-23.
How do I convert electronvolts to watt hours?
Multiply the electronvolt value by 4.4505e-23 to get watt hours. For example, 10 eV = 4.4505e-22 Wh.
Is this electronvolt-to-watt hour converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Electronvolt to other energy units
| Unit | 1 Electronvolt equals |
|---|---|
| Joule (J) | 1.6022e-19 J |
| Kilojoule (kJ) | 1.6022e-22 kJ |
| Calorie (cal) | 3.8293e-20 cal |
| Kilocalorie (kcal) | 3.8293e-23 kcal |
| Watt Hour (Wh) | 4.4505e-23 Wh |
| Kilowatt Hour (kWh) | 4.4505e-26 kWh |
| British Thermal Unit (BTU) | 1.5186e-22 BTU |
| Foot-Pound (ft·lb) | 1.1817e-19 ft·lb |