Convert Ergs to Exajoules
Convert Ergs (erg) to Exajoules (EJ) instantly and accurately.
Conversion Formula
EJ = erg × 1.000000000e-25
About Ergs
An erg is the CGS unit of energy - the work done by one dyne through one centimetre - exactly 10⁻⁷ J. Despite SI adoption, the erg persists in astrophysics: the Sun's luminosity is 3.828 × 10³³ erg/s; gamma-ray burst isotropic energies are quoted in units of 10⁵¹ erg ('one foe'). Surface tension of water is 72.8 dyn/cm; the work to create 1 cm² of new water-air interface is 72.8 erg. Earthquake seismic moment M₀ is in dyn·cm = erg; the 2004 Boxing Day earthquake had M₀ ≈ 10²³ J = 10³⁰ erg. 1 erg = 10⁻⁷ J = 624.15 eV.
About Exajoules
An exajoule (EJ) is 10¹⁸ J - the scale of global energy consumption. World primary energy supply in 2022 was ~580-610 EJ: coal ~160 EJ; oil ~190 EJ; gas ~145 EJ; nuclear ~26 EJ; wind ~8 EJ; solar PV ~8 EJ. Global electricity generation of ~29,000 TWh = 104 EJ. Solar energy incident on Earth's atmosphere is ~5.5 × 10⁶ EJ/year - approximately 9,000× total human demand. Annual fossil fuel combustion releases ~490 EJ/year, producing ~36.8 Gt CO₂. 1 EJ = 10¹⁸ J = 277.78 TWh = 238.85 Mtoe.
Quick Reference Table
| Ergs (erg) | Exajoules (EJ) |
|---|---|
| 1 erg | 1 × 10-25 EJ |
| 2 erg | 2 × 10-25 EJ |
| 5 erg | 5 × 10-25 EJ |
| 10 erg | 1 × 10-24 EJ |
| 25 erg | 2.5 × 10-24 EJ |
| 50 erg | 5 × 10-24 EJ |
| 100 erg | 1 × 10-23 EJ |