Kilocalories (kcal) to Ergs (erg) Conversion
Kilocalories
The kilocalorie (kcal), commonly called a "Calorie" (capital C) in nutritional contexts, is a unit of energy equal to exactly 4,184 joules. It represents the energy needed to raise 1 kg of water by 1 °C. In nutrition, all food energy values are expressed in kcal per gram: carbohydrates and protein provide 4 kcal/g; fat provides 9 kcal/g; alcohol provides 7 kcal/g. An average adult requires approximately 2,000–2,500 kcal per day to maintain body weight.
Ergs
The erg is a unit of energy in the CGS (centimetre-gram-second) system, equal to exactly 10⁻⁷ joules. The word derives from the Greek ergon (work). Though largely superseded by the joule in modern science, the erg persists in astrophysics — stellar luminosities and gamma-ray burst energies are sometimes expressed in ergs — and in classical physics texts. One erg is approximately the energy required to move a mosquito by 1 cm. The total energy released by the Sun per second is approximately 3.8 × 10³³ ergs.
| Kilocalories (kcal) | Ergs (erg) |
|---|---|
| 0.1 kcal | 4184000000 erg |
| 1 kcal | 41840000000 erg |
| 2 kcal | 83680000000 erg |
| 3 kcal | 125520000000 erg |
| 5 kcal | 209200000000 erg |
| 10 kcal | 418400000000 erg |
| 20 kcal | 836800000000 erg |
| 30 kcal | 1255200000000 erg |
| 50 kcal | 2092000000000 erg |
| 100 kcal | 4184000000000 erg |
| 1000 kcal | 41840000000000 erg |
Frequently Asked Questions (FAQ)
How many ergs are in 1 kilocalories?
1 kilocalories (kcal) is exactly 41,840,000,000 ergs (erg).
How do I convert kilocalories to ergs?
Multiply the value in kilocalories by 41,840,000,000 to get the result in ergs. Or use the converter above — type any number and see the result instantly.