Convert Kilowatt-Hours to Petajoules
Convert Kilowatt-Hours (kWh) to Petajoules (PJ) instantly and accurately.
Conversion Formula
PJ = kWh × 3.600000000e-9
About Kilowatt-Hours
A kilowatt-hour (kWh) is the energy consumed by 1 kW for one hour - exactly 3,600,000 J = 3.6 MJ. All domestic electricity meters bill in kWh. Appliance benchmarks: fridge 180-250 kWh/year; washing machine 0.5-2.0 kWh/cycle; air conditioner 1-3 kWh/h. EVs consume 13-25 kWh/100 km; the Lucid Air achieves ~15.9 kWh/100 km (WLTP). Producing 1 tonne of primary aluminium requires ~13,000-15,000 kWh. Global electricity generation is ~29,165 TWh ≈ 2.9 × 10¹³ kWh/year. 1 kWh = 3.6 MJ = 3,412.1 BTU = 859.85 kcal.
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
| Kilowatt-Hours (kWh) | Petajoules (PJ) |
|---|---|
| 1 kWh | 3.6 × 10-9 PJ |
| 2 kWh | 7.2 × 10-9 PJ |
| 5 kWh | 1.8 × 10-8 PJ |
| 10 kWh | 3.6 × 10-8 PJ |
| 25 kWh | 9 × 10-8 PJ |
| 50 kWh | 1.8 × 10-7 PJ |
| 100 kWh | 3.6 × 10-7 PJ |