Kilocalories (kcal) to Electronvolts (eV) Conversion
Kilocalories
The kilocalorie (kcal), commonly called a "Calorie" (capital C) in nutritional contexts, is a unit of energy equal to exactly 4,184 joules. It represents the energy needed to raise 1 kg of water by 1 °C. In nutrition, all food energy values are expressed in kcal per gram: carbohydrates and protein provide 4 kcal/g; fat provides 9 kcal/g; alcohol provides 7 kcal/g. An average adult requires approximately 2,000–2,500 kcal per day to maintain body weight.
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).
| Kilocalories (kcal) | Electronvolts (eV) |
|---|---|
| 0.1 kcal | 2.6114473967544E+21 eV |
| 1 kcal | 2.6114473967544E+22 eV |
| 2 kcal | 5.2228947935088E+22 eV |
| 3 kcal | 7.8343421902631E+22 eV |
| 5 kcal | 1.3057236983772E+23 eV |
| 10 kcal | 2.6114473967544E+23 eV |
| 20 kcal | 5.2228947935088E+23 eV |
| 30 kcal | 7.8343421902631E+23 eV |
| 50 kcal | 1.3057236983772E+24 eV |
| 100 kcal | 2.6114473967544E+24 eV |
| 1000 kcal | 2.6114473967544E+25 eV |
Frequently Asked Questions (FAQ)
How many electronvolts are in 1 kilocalories?
1 kilocalories (kcal) is exactly 26,114,473,967,543,832,805,376 electronvolts (eV).
How do I convert kilocalories to electronvolts?
Multiply the value in kilocalories by 26,114,473,967,543,832,805,376 to get the result in electronvolts. Or use the converter above — type any number and see the result instantly.