Convert Electronvolt to Kilocalorie
Use this free converter to change electronvolts (eV) into kilocalories (kcal). Electronvolt and kilocalorie both measure energy. As a quick reference, 1 eV equals 3.8293e-23 kcal, and 1 kcal equals 2.6114e+22 eV.
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Kilocalorie (kcal)
3.8293e-23
1 eV = 3.8293e-23 kcal
Energy conversion table
| Electronvolt | Kilocalorie |
|---|---|
| 0.01 | 3.8293e-25 |
| 0.1 | 3.8293e-24 |
| 0.5 | 1.9146e-23 |
| 1 | 3.8293e-23 |
| 2 | 7.6586e-23 |
| 3 | 1.1488e-22 |
| 5 | 1.9146e-22 |
| 10 | 3.8293e-22 |
| 20 | 7.6586e-22 |
| 25 | 9.5732e-22 |
| 50 | 1.9146e-21 |
| 100 | 3.8293e-21 |
| 1,000 | 3.8293e-20 |
How to convert Electronvolt to Kilocalorie
Multiply the electronvolt value by 3.8293e-23 to get kilocalories.
- Enter the number of electronvolts you want to convert.
- The converter instantly shows the equivalent value in kilocalories.
- Worked example: 15 eV × 3.8293e-23 = 5.7439e-22 kcal.
- Use the swap button to reverse the conversion (kilocalorie 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.
Kilocalorie (kcal)
- Definition
- A kilocalorie (kcal) is 1,000 small calories — the "Calorie" used on food labels.
- History
- It was adopted by nutritionists as a practical measure of food energy.
- Current use
- Kilocalories (food Calories) measure the energy content of food and diets.
Frequently asked questions
How many kilocalories are in a electronvolt?
There are 3.8293e-23 kcal in 1 eV. To convert, multiply the number of electronvolts by 3.8293e-23.
How do I convert electronvolts to kilocalories?
Multiply the electronvolt value by 3.8293e-23 to get kilocalories. For example, 10 eV = 3.8293e-22 kcal.
Is this electronvolt-to-kilocalorie 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 |