Calorie to Electronvolt Converter
Energy · unit-converter
Convert Calorie to Electronvolt 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: Calorie (cal)
To: Electronvolt (ev)
About Calorie
The small calorie (cal) is 4.184 J in this converter (thermochemical). Do not confuse with the dietary 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.
How to convert calories to electronvolts
1 calorie is equal to 2.61144740e+19 electronvolt when both are expressed in joule-equivalents:
1 cal = (4.184 J ÷ 1.602176634e-19 J) ev = 2.61144740e+19 ev
Each calorie is defined as 4.184 J and each electronvolt as 1.602176634e-19 J in this tool, so one cal equals 4.184 ÷ 1.602176634e-19 ev = 2.61144740e+19 ev.
Let d(cal) be the numeric amount in Calorie (cal), and d(ev) the amount in Electronvolt (ev). Then:
d(ev) = d(cal) × (4.184 / 1.602176634e-19)
Equivalently, divide by how many cal fit into one ev (joules per ev divided by joules per cal):
d(ev) = d(cal) ÷ 3.82929406e-20
Or: electronvolt = calorie ÷ 3.82929406e-20
Examples
Example #1: Convert 1 cal to electronvolt
1 cal = 1 cal × (4.184/1.602176634e-19) ev = 26114473967500001280 ev
1 cal = 1 cal ÷ 3.82929406e-20 = 26114473967500001280 ev
Example #2: Convert 10 cal to electronvolt
10 cal = 10 cal × (4.184/1.602176634e-19) ev = 261144739675000012800 ev
10 cal = 10 cal ÷ 3.82929406e-20 = 261144739675000012800 ev
Summary
To convert Calorie to Electronvolt, multiply the value in cal by the ratio of joules per cal divided by joules per ev. Equivalently: value_ev = value_cal × (4.184 / 1.602176634e-19). Numerically, 1 cal equals 26114473967543833000 ev.
Relationship context
You are converting between food / nutrition energy (calories) (Calories) and atomic-scale energy (electronvolts) (Electronvolts). All values are mapped through joules first. The numeric factor is 2.611447e+19.
Conversion tables
| Calorie (cal) | Electronvolt (ev) |
|---|---|
| 0.1 | 2,611,447,396,750,000,128 |
| 1 | 26,114,473,967,500,001,280 |
| 2 | 52,228,947,935,100,002,304 |
| 3 | 78,343,421,902,599,995,392 |
| 4 | 104,457,895,870,000,005,120 |
| 5 | 130,572,369,837,999,996,928 |
| 6 | 156,686,843,805,000,007,680 |
| 7 | 182,801,317,773,000,015,872 |
| 8 | 208,915,791,740,000,010,240 |
| 9 | 235,030,265,707,999,985,664 |
| Calorie (cal) | Electronvolt (ev) |
|---|---|
| 10 | 261,144,739,675,000,012,800 |
| 20 | 522,289,479,350,999,973,888 |
| 30 | 783,434,219,025,999,986,688 |
| 40 | 1.0445789587e+21 |
| 50 | 1.30572369838e+21 |
| 60 | 1.56686843805e+21 |
| 70 | 1.82801317773e+21 |
| 80 | 2.0891579174e+21 |
| 90 | 2.35030265708e+21 |
| 100 | 2.61144739675e+21 |