Convert Megajoules to Exajoules
Convert Megajoules (MJ) to Exajoules (EJ) instantly and accurately.
Conversion Formula
EJ = MJ × 1.000000000e-12
About Megajoules
A megajoule (MJ) is 10⁶ J - the scale of fuel combustion in vehicles and kinetic energy of road traffic. Energy content: 1 L diesel ~34.9 MJ; 1 L petrol ~32.2 MJ. A 1,500 kg car at 100 km/h has KE = ½ × 1,500 × 27.78² ≈ 0.579 MJ; at 200 km/h it carries 2.31 MJ - explaining crash severity's quadratic speed dependence. A 60 kWh EV battery stores 60 × 3.6 = 216 MJ. Detonation of 1 kg TNT releases 4.184 MJ. Adults at rest metabolise ~6-9 MJ/day. 1 MJ = 10⁶ J = 239.0 kcal = 0.27778 kWh = 947.8 BTU.
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
| Megajoules (MJ) | Exajoules (EJ) |
|---|---|
| 1 MJ | 1 × 10-12 EJ |
| 2 MJ | 2 × 10-12 EJ |
| 5 MJ | 5 × 10-12 EJ |
| 10 MJ | 1 × 10-11 EJ |
| 25 MJ | 2.5 × 10-11 EJ |
| 50 MJ | 5 × 10-11 EJ |
| 100 MJ | 1 × 10-10 EJ |