Ergs (erg) to Kilocalories (kcal) Conversion
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 Though largely superseded by the joule in modern science, the erg persists in astrophysics — stellar luminosities and gamma-ray burst energies are sometimes expressed in ergs — and in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
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 (erg) | Kilocalories (kcal) |
|---|---|
| 0.1 erg | 2.3900573613767E-12 kcal |
| 1 erg | 2.3900573613767E-11 kcal |
| 2 erg | 4.7801147227533E-11 kcal |
| 3 erg | 7.17017208413E-11 kcal |
| 5 erg | 1.1950286806883E-10 kcal |
| 10 erg | 2.3900573613767E-10 kcal |
| 20 erg | 4.7801147227533E-10 kcal |
| 30 erg | 7.17017208413E-10 kcal |
| 50 erg | 1.1950286806883E-9 kcal |
| 100 erg | 2.3900573613767E-9 kcal |
| 1000 erg | 2.3900573613767E-8 kcal |
Frequently Asked Questions (FAQ)
How many kilocalories are in 1 ergs?
1 ergs (erg) is exactly 0 kilocalories (kcal).
How do I convert ergs to kilocalories?
Multiply the value in ergs by 0 to get the result in kilocalories. Or use the converter above — type any number and see the result instantly.