Convert Gigajoules to Petajoules
Convert Gigajoules (GJ) to Petajoules (PJ) instantly and accurately.
Conversion Formula
PJ = GJ × 1.000000000e-6
About Gigajoules
A gigajoule (GJ) is 10⁹ J - the scale of fossil-fuel commodity volumes. One barrel of crude oil contains ~5.80 GJ; one metric tonne of hard coal ~29.3 GJ. Canadian energy bills express household consumption in GJ: average Canadian households use ~100-130 GJ/year. A 1 GW power plant at 33% efficiency burns ~10.9 GJ/h of fuel to generate 1 GWh = 3.6 GJ of electricity. Detonation of 1 tonne of TNT releases 4.184 GJ. 1 GJ = 10⁹ J = 277.78 kWh = 947,817 BTU = 9.4782 therms.
About Petajoules
A petajoule (PJ) is 10¹⁵ J - the national energy policy scale. IEA reports primary energy in PJ/year: Sweden ~600 PJ; Germany ~12,500 PJ; the United States ~93,000 PJ. World total primary energy supply is ~605,000 PJ = 605 EJ. The 1883 Krakatoa eruption released ~200 PJ ≈ 48 megatons TNT. A 1-megaton nuclear weapon releases 4.184 PJ. Global annual steel production embeds ~38,000-47,000 PJ of energy. 1 PJ = 10¹⁵ J = 277.78 GWh = 238.85 ktoe = 23.88 ktoe.
Quick Reference Table
| Gigajoules (GJ) | Petajoules (PJ) |
|---|---|
| 1 GJ | 1 × 10-6 PJ |
| 2 GJ | 2 × 10-6 PJ |
| 5 GJ | 5 × 10-6 PJ |
| 10 GJ | 1 × 10-5 PJ |
| 25 GJ | 2.5 × 10-5 PJ |
| 50 GJ | 5 × 10-5 PJ |
| 100 GJ | 1 × 10-4 PJ |