Electronvolts to kilocalories converter
Kilocalories (kcal)
1 electronvolt = 3.829294e-23 kilocalories
How to convert electronvolts to kilocalories
kcal = eV × 3.82929405832 × 10^-23
Multiply the number of electronvolts by 3.82929405832 × 10^-23 to get kilocalories. Going the other way, divide by 3.82929405832 × 10^-23 (or multiply by 2.61144739675 × 10^22).
One electronvolt is exactly defined as 3.82929405832 × 10^-23 kilocalories (to 12 significant figures), and one kilocalorie is 2.61144739675 × 10^22 electronvolts.
Worked examples
- Convert 5 electronvolts: 5 × 3.82929405832 × 10^-23 = 1.914647e-22 1.914647e-22 kilocalories.
- Convert 12.5 electronvolts: 12.5 × 3.82929405832 × 10^-23 = 4.786618e-22 4.786618e-22 kilocalories.
- Convert 250 electronvolts: 250 × 3.82929405832 × 10^-23 = 9.573235e-21 9.573235e-21 kilocalories.
Quick-reference table
| eV | kcal |
|---|---|
| 1 | 3.829294e-23 |
| 2 | 7.658588e-23 |
| 3 | 1.148788e-22 |
| 5 | 1.914647e-22 |
| 10 | 3.829294e-22 |
| 15 | 5.743941e-22 |
| 20 | 7.658588e-22 |
| 25 | 9.573235e-22 |
| 50 | 1.914647e-21 |
| 75 | 2.871971e-21 |
| 100 | 3.829294e-21 |
| 1,000 | 3.829294e-20 |
| kcal | eV |
|---|---|
| 1 | 2.611447e+22 |
| 2 | 5.222895e+22 |
| 3 | 7.834342e+22 |
| 5 | 1.305724e+23 |
| 10 | 2.611447e+23 |
| 15 | 3.917171e+23 |
| 20 | 5.222895e+23 |
| 25 | 6.528618e+23 |
| 50 | 1.305724e+24 |
| 75 | 1.958586e+24 |
| 100 | 2.611447e+24 |
| 1,000 | 2.611447e+25 |
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Frequently asked questions
How many kilocalories are in 1 electronvolt?
1 electronvolt equals 3.829294e-23 kilocalories.
What is the formula to convert electronvolts to kilocalories?
Use kcal = eV × 3.82929405832 × 10^-23. Multiply the number of electronvolts by 3.82929405832 × 10^-23 to get kilocalories. Going the other way, divide by 3.82929405832 × 10^-23 (or multiply by 2.61144739675 × 10^22).
What is 100 electronvolts in kilocalories?
100 electronvolts is 3.829294e-21 kilocalories.