electronvolts to watt-hours
Convert electronvolt to watt-hour — instant, free, with the formula shown.
How to convert electronvolt to watt-hour
To convert electronvolt to watt-hour, multiply by 4.4505e-23:
For example, 10 eV × 4.4505e-23 = 4.4505e-22 Wh.
eV to Wh conversion table
| electronvolts (eV) | watt-hours (Wh) |
|---|---|
| 1 eV | 4.4505e-23 Wh |
| 2 eV | 8.9010e-23 Wh |
| 5 eV | 2.2252e-22 Wh |
| 10 eV | 4.4505e-22 Wh |
| 25 eV | 1.1126e-21 Wh |
| 50 eV | 2.2252e-21 Wh |
| 100 eV | 4.4505e-21 Wh |
| 250 eV | 1.1126e-20 Wh |
| 500 eV | 2.2252e-20 Wh |
| 1000 eV | 4.4505e-20 Wh |
Other electronvolt conversions
Convert to watt-hour from another unit
eV to Wh — frequently asked
How many watt-hours are in 1 electronvolt?
1 electronvolt = 4.4505e-23 watt-hours (eV × 4.4505e-23 = Wh).
What is the formula to convert electronvolt to watt-hour?
Multiply your electronvolt value by 4.4505e-23 to get watt-hour.
How do I convert 10 electronvolts to watt-hours?
10 eV = 4.4505e-22 Wh. For 100 eV the answer is 4.4505e-21 Wh. Use the calculator on this page for any other value.
When to convert electronvolt to watt-hour
Energy conversion — common questions
Is a food calorie the same as a calorie?
No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.
How many joules in 1 kWh?
1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.
What is a BTU?
British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.