Electronvolt to Calorie Converter
Energy · unit-converter
Convert Electronvolt to Calorie 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: Calorie (cal)
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 Calorie
The small calorie (cal) is 4.184 J in this converter (thermochemical). Do not confuse with the dietary kilocalorie (kcal).
How to convert electronvolts to calories
1 electronvolt is equal to 3.82929406e-20 calorie when both are expressed in joule-equivalents:
1 ev = (1.602176634e-19 J ÷ 4.184 J) cal = 3.82929406e-20 cal
Each electronvolt is defined as 1.602176634e-19 J and each calorie as 4.184 J in this tool, so one ev equals 1.602176634e-19 ÷ 4.184 cal = 3.82929406e-20 cal.
Let d(ev) be the numeric amount in Electronvolt (ev), and d(cal) the amount in Calorie (cal). Then:
d(cal) = d(ev) × (1.602176634e-19 / 4.184)
Equivalently, divide by how many ev fit into one cal (joules per cal divided by joules per ev):
d(cal) = d(ev) ÷ 2.61144740e+19
Or: calorie = electronvolt ÷ 2.61144740e+19
Examples
Example #1: Convert 1 ev to calorie
1 ev = 1 ev × (1.602176634e-19/4.184) cal = 0 cal
1 ev = 1 ev ÷ 2.61144740e+19 = 0 cal
Example #2: Convert 10 ev to calorie
10 ev = 10 ev × (1.602176634e-19/4.184) cal = 0 cal
10 ev = 10 ev ÷ 2.61144740e+19 = 0 cal
Summary
To convert Electronvolt to Calorie, multiply the value in ev by the ratio of joules per ev divided by joules per cal. Equivalently: value_cal = value_ev × (1.602176634e-19 / 4.184). Numerically, 1 ev equals 3.829294058317399e-20 cal.
Relationship context
You are converting between atomic-scale energy (electronvolts) (Electronvolts) and food / nutrition energy (calories) (Calories). All values are mapped through joules first. The numeric factor is 3.829294e-20.
Conversion tables
| Electronvolt (ev) | Calorie (cal) |
|---|---|
| 0.1 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| Electronvolt (ev) | Calorie (cal) |
|---|---|
| 10 | 0 |
| 20 | 0 |
| 30 | 0 |
| 40 | 0 |
| 50 | 0 |
| 60 | 0 |
| 70 | 0 |
| 80 | 0 |
| 90 | 0 |
| 100 | 0 |