Convert Electronvolt to Calorie
Use this free converter to change electronvolts (eV) into calories (cal). Electronvolt and calorie both measure energy. As a quick reference, 1 eV equals 3.8293e-20 cal, and 1 cal equals 2.6114e+19 eV.
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Calorie (cal)
3.8293e-20
1 eV = 3.8293e-20 cal
Energy conversion table
| Electronvolt | Calorie |
|---|---|
| 0.01 | 3.8293e-22 |
| 0.1 | 3.8293e-21 |
| 0.5 | 1.9146e-20 |
| 1 | 3.8293e-20 |
| 2 | 7.6586e-20 |
| 3 | 1.1488e-19 |
| 5 | 1.9146e-19 |
| 10 | 3.8293e-19 |
| 20 | 7.6586e-19 |
| 25 | 9.5732e-19 |
| 50 | 1.9146e-18 |
| 100 | 3.8293e-18 |
| 1,000 | 3.8293e-17 |
How to convert Electronvolt to Calorie
Multiply the electronvolt value by 3.8293e-20 to get calories.
- Enter the number of electronvolts you want to convert.
- The converter instantly shows the equivalent value in calories.
- Worked example: 15 eV × 3.8293e-20 = 5.7439e-19 cal.
- Use the swap button to reverse the conversion (calorie 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.
Calorie (cal)
- Definition
- A calorie (cal) is the energy needed to raise one gram of water by one degree Celsius, about 4.184 joules.
- History
- Defined in the 19th century, the small calorie was later joined by the larger food Calorie.
- Current use
- Calories appear in chemistry and, as kilocalories, in nutrition.
Frequently asked questions
How many calories are in a electronvolt?
There are 3.8293e-20 cal in 1 eV. To convert, multiply the number of electronvolts by 3.8293e-20.
How do I convert electronvolts to calories?
Multiply the electronvolt value by 3.8293e-20 to get calories. For example, 10 eV = 3.8293e-19 cal.
Is this electronvolt-to-calorie 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 |