Electronvolt to Kilocalorie Converter
Energy · unit-converter
Convert Electronvolt to Kilocalorie with fixed input and output units, a step-by-step formula line, and reference tables. Factors are joule-based; food energy uses thermochemical calories. The full Energy Converter also includes MMBtu, toe, thermal kWh, and MeV/GeV.
Calculator
From: Electronvolt (ev)
To: Kilocalorie (kcal)
About Electronvolt
The electronvolt is the energy change of one elementary charge across 1 V: 1 eV ≈ 1.602176634×10⁻¹⁹ J (exact by SI definition). Used in particle physics and chemistry.
About Kilocalorie
The kilocalorie (kcal) is 1,000 calories in the nutrition sense—often labeled “Calorie” on food packaging. Here 1 kcal = 4,184 J (thermochemical calorie definition used in this tool).
How to convert electronvolts to kilocalories
1 electronvolt is equal to 3.82929406e-23 kilocalorie when both are expressed in joule-equivalents:
1 ev = (1.602176634e-19 J ÷ 4,184 J) kcal = 3.82929406e-23 kcal
Each electronvolt is defined as 1.602176634e-19 J and each kilocalorie as 4,184 J in this tool, so one ev equals 1.602176634e-19 ÷ 4,184 kcal = 3.82929406e-23 kcal.
Let d(ev) be the numeric amount in Electronvolt (ev), and d(kcal) the amount in Kilocalorie (kcal). Then:
d(kcal) = d(ev) × (1.602176634e-19 / 4,184)
Equivalently, divide by how many ev fit into one kcal (joules per kcal divided by joules per ev):
d(kcal) = d(ev) ÷ 2.61144740e+22
Or: kilocalorie = electronvolt ÷ 2.61144740e+22
Examples
Example #1: Convert 1 ev to kilocalorie
1 ev = 1 ev × (1.602176634e-19/4,184) kcal = 0 kcal
1 ev = 1 ev ÷ 2.61144740e+22 = 0 kcal
Example #2: Convert 10 ev to kilocalorie
10 ev = 10 ev × (1.602176634e-19/4,184) kcal = 0 kcal
10 ev = 10 ev ÷ 2.61144740e+22 = 0 kcal
Summary
To convert Electronvolt to Kilocalorie, multiply the value in ev by the ratio of joules per ev divided by joules per kcal. Equivalently: value_kcal = value_ev × (1.602176634e-19 / 4184). Numerically, 1 ev equals 3.8292940583173993e-23 kcal.
Relationship context
You are converting between atomic-scale energy (electronvolts) (Electronvolts) and food / nutrition energy (calories) (Kilocalories). All values are mapped through joules first. The numeric factor is 3.829294e-23.
Conversion tables
| Electronvolt (ev) | Kilocalorie (kcal) |
|---|---|
| 0.1 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| Electronvolt (ev) | Kilocalorie (kcal) |
|---|---|
| 10 | 0 |
| 20 | 0 |
| 30 | 0 |
| 40 | 0 |
| 50 | 0 |
| 60 | 0 |
| 70 | 0 |
| 80 | 0 |
| 90 | 0 |
| 100 | 0 |