Convert Calorie to Electronvolt
Use this free converter to change calories (cal) into electronvolts (eV). Calorie and electronvolt both measure energy. As a quick reference, 1 cal equals 2.6114e+19 eV, and 1 eV equals 3.8293e-20 cal.
Free · runs in your browser · no sign-up
Electronvolt (eV)
2.6114e+19
1 cal = 2.6114e+19 eV
Energy conversion table
| Calorie | Electronvolt |
|---|---|
| 0.01 | 2.6114e+17 |
| 0.1 | 2.6114e+18 |
| 0.5 | 1.3057e+19 |
| 1 | 2.6114e+19 |
| 2 | 5.2229e+19 |
| 3 | 7.8343e+19 |
| 5 | 1.3057e+20 |
| 10 | 2.6114e+20 |
| 20 | 5.2229e+20 |
| 25 | 6.5286e+20 |
| 50 | 1.3057e+21 |
| 100 | 2.6114e+21 |
| 1,000 | 2.6114e+22 |
How to convert Calorie to Electronvolt
Multiply the calorie value by 2.6114e+19 to get electronvolts.
- Enter the number of calories you want to convert.
- The converter instantly shows the equivalent value in electronvolts.
- Worked example: 15 cal × 2.6114e+19 = 3.9172e+20 eV.
- Use the swap button to reverse the conversion (electronvolt to calorie).
About these units
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.
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.
Frequently asked questions
How many electronvolts are in a calorie?
There are 2.6114e+19 eV in 1 cal. To convert, multiply the number of calories by 2.6114e+19.
How do I convert calories to electronvolts?
Multiply the calorie value by 2.6114e+19 to get electronvolts. For example, 10 cal = 2.6114e+20 eV.
Is this calorie-to-electronvolt 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 Calorie to other energy units
| Unit | 1 Calorie equals |
|---|---|
| Joule (J) | 4.184 J |
| Kilojoule (kJ) | 0.004184 kJ |
| Kilocalorie (kcal) | 0.001 kcal |
| Watt Hour (Wh) | 0.0011622222 Wh |
| Kilowatt Hour (kWh) | 0.0000011622222 kWh |
| Electronvolt (eV) | 2.6114e+19 eV |
| British Thermal Unit (BTU) | 0.0039656668 BTU |
| Foot-Pound (ft·lb) | 3.08596 ft·lb |