Kilocalories to Electronvolts: 1 kcal equals 2.61145e+22 eV. To convert kilocalories to electronvolts, multiply by 2.61145e+22 (eV = kcal × 2.6114e+22). For example, 10 kcal = 2.61145e+23 eV.
How to Convert Kilocalories to Electronvolts
To convert from kilocalories to electronvolts, multiply the value by 2.61145e+22. The conversion is linear, meaning doubling the input doubles the output.
Conversion Formula
- Kilocalories to Electronvolts:
eV = kcal × 2.6114e+22 - Electronvolts to Kilocalories:
kcal = eV ÷ 2.6114e+22
Kilocalories to Electronvolts Conversion Chart
| Kilocalories (kcal) | Electronvolts (eV) |
|---|---|
| 0.1 | 2.61145e+21 |
| 0.25 | 6.52862e+21 |
| 0.5 | 1.30572e+22 |
| 1 | 2.61145e+22 |
| 2 | 5.22289e+22 |
| 3 | 7.83434e+22 |
| 5 | 1.30572e+23 |
| 10 | 2.61145e+23 |
| 20 | 5.22289e+23 |
| 25 | 6.52862e+23 |
| 50 | 1.30572e+24 |
| 100 | 2.61145e+24 |
| 250 | 6.52862e+24 |
| 1000 | 2.61145e+25 |
Understanding the Units
What is a Kilocalorie?
A kilocalorie (kcal) equals 1,000 small calories, or 4,184 joules. In nutrition, the food "Calorie" (capital C) refers to the kilocalorie.
Common contexts: nutrition (US), metabolism, food labeling.
What is an Electronvolt?
An electronvolt equals approximately 1.602 × 10⁻¹⁹ joules — the kinetic energy gained by a single electron accelerated through a one-volt potential difference.
Common contexts: particle physics, atomic spectroscopy, semiconductor band gaps.
Real-World Reference Points
| Item | Kilocalories (kcal) | Electronvolts (eV) |
|---|---|---|
| Slice of bread | 80 | 2.089e+24 |
| Banana (medium) | 105 | 2.742e+24 |
| Daily intake (adult) | 2000 | 5.223e+25 |