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 | 2.6114473967544E+18 eV |
| 1 cal | 2.6114473967544E+19 eV |
| 2 cal | 5.2228947935088E+19 eV |
| 3 cal | 7.8343421902632E+19 eV |
| 5 cal | 1.3057236983772E+20 eV |
| 10 cal | 2.6114473967544E+20 eV |
| 20 cal | 5.2228947935088E+20 eV |
| 30 cal | 7.8343421902631E+20 eV |
| 50 cal | 1.3057236983772E+21 eV |
| 100 cal | 2.6114473967544E+21 eV |
| 1000 cal | 2.6114473967544E+22 eV |