Calories (cal) to Electronvolts (eV) Conversion
Calories
The calorie (cal) is a unit of energy equal to exactly 4.184 joules, defined as the energy required to raise the temperature of one gram of water by one degree Celsius at 15 °C. This is the thermochemical calorie — distinct from the food calorie (written as Cal or kcal), which is 1,000 times larger. The calorie originated in 19th-century thermodynamics before the joule was established as the SI standard, and persists in chemistry, biology, and food science.
Electronvolts
The electronvolt (eV) is a unit of energy equal to exactly 1.602176634 × 10⁻¹⁹ joules, defined as the kinetic energy gained by a single electron accelerated through a potential difference of one volt. It is the standard unit in particle physics, atomic physics, and solid-state physics. Visible light photons carry 1.8–3.1 eV of energy; X-ray photons carry 100 eV to 100 keV; the proton beams at CERN's LHC reach 6.5 teraelectronvolts (TeV).
| Calories (cal) | Electronvolts (eV) |
|---|---|
| 0.1 cal | 2,611,447,396,754,383,400.00 eV |
| 1 cal | 26,114,473,967,543,833,000.00 eV |
| 2 cal | 52,228,947,935,087,665,000.00 eV |
| 3 cal | 78,343,421,902,631,500,000.00 eV |
| 5 cal | 130,572,369,837,719,160,000.00 eV |
| 10 cal | 261,144,739,675,438,320,000.00 eV |
| 20 cal | 522,289,479,350,876,640,000.00 eV |
| 30 cal | 783,434,219,026,315,000,000.00 eV |
| 50 cal | 1,305,723,698,377,191,600,000.00 eV |
| 100 cal | 2,611,447,396,754,383,000,000.00 eV |
| 1000 cal | 26,114,473,967,543,833,000,000.00 eV |
Frequently Asked Questions (FAQ)
How many electronvolts are in 1 calories?
1 calories (cal) is exactly 26,114,473,967,543,832,576 electronvolts (eV).
How do I convert calories to electronvolts?
Multiply the value in calories by 26,114,473,967,543,832,576 to get the result in electronvolts. Or use the converter above — type any number and see the result instantly.