Kilojoules (kJ) to Ergs (erg) Conversion
Kilojoules
The kilojoule (kJ) is a unit of energy equal to exactly 1,000 joules. It is the standard unit for expressing food energy in most countries outside the United States, where food labels display energy in both kilojoules and kilocalories (kcal). One kilocalorie equals exactly 4.184 kilojoules. In thermodynamics and chemistry, reaction enthalpies and bond energies are commonly tabulated in kilojoules per mole (kJ/mol).
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 Though largely superseded by the joule in modern science, the erg persists in astrophysics — stellar luminosities and gamma-ray burst energies are sometimes expressed in ergs — and in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.
| Kilojoules (kJ) | Ergs (erg) |
|---|---|
| 0.1 kJ | 1000000000 erg |
| 1 kJ | 10000000000 erg |
| 2 kJ | 20000000000 erg |
| 3 kJ | 30000000000 erg |
| 5 kJ | 50000000000 erg |
| 10 kJ | 100000000000 erg |
| 20 kJ | 200000000000 erg |
| 30 kJ | 300000000000 erg |
| 50 kJ | 500000000000 erg |
| 100 kJ | 1000000000000 erg |
| 1000 kJ | 10000000000000 erg |
Frequently Asked Questions (FAQ)
How many ergs are in 1 kilojoules?
1 kilojoules (kJ) is exactly 10,000,000,000 ergs (erg).
How do I convert kilojoules to ergs?
Multiply the value in kilojoules by 10,000,000,000 to get the result in ergs. Or use the converter above — type any number and see the result instantly.