Electronvolt (eV)
The energy gained by an electron across one volt.
Result
1 electronvolt = 1.602176634 × 10⁻¹⁹ joules
Electronvolt at a glance
| Unit name | Electronvolt (plural: electronvolts) |
|---|---|
| Symbol | eV |
| Quantity measured | Energy |
| Measurement system | Metric |
| Also known as | ev, electron volt |
| Definition exact? | Yes — exact by definition |
1 electronvolt in other energy units
| Unit | 1 eV equals |
|---|---|
| Joule | 1.60217663 × 10⁻¹⁹ J |
| Kilojoule | 1.60217663 × 10⁻²² kJ |
| Megajoule | 1.60217663 × 10⁻²⁵ MJ |
| Calorie | 3.82929406 × 10⁻²⁰ cal |
| Kilocalorie | 3.82929406 × 10⁻²³ kcal |
| Watt-hour | 4.45049065 × 10⁻²³ Wh |
| Kilowatt-hour | 4.45049065 × 10⁻²⁶ kWh |
| Megawatt-hour | 4.45049065 × 10⁻²⁹ MWh |
| British thermal unit | 1.51857044 × 10⁻²² BTU |
| Therm | 1.51857044 × 10⁻²⁷ thm |
| Foot-pound | 1.18170484 × 10⁻¹⁹ ft·lb |
Frequently asked questions
- What is a electronvolt?
- The energy gained by an electron across one volt.
- What is the symbol for the electronvolt?
- The symbol for the electronvolt is eV. It measures energy.
- How many joules are in a electronvolt?
- 1 electronvolt = 1.60217663 × 10⁻¹⁹ joules.
- How many kilojoules are in a electronvolt?
- 1 electronvolt = 1.60217663 × 10⁻²² kilojoules.
- How many kilocalories are in a electronvolt?
- 1 electronvolt = 3.82929406 × 10⁻²³ kilocalories.