Convert Kilojoules to Gigawatt-Hours
Convert Kilojoules (kJ) to Gigawatt-Hours (GWh) instantly and accurately.
Conversion Formula
GWh = kJ × 2.777777778e-10
About Kilojoules
A kilojoule (kJ) is exactly 1,000 J and is the standard energy unit for food and physical chemistry. EU, Australian, and NZ food labels are mandatory in kJ: recommended adult intake is ~8,400 kJ/day. Bond dissociation energies: C-H bond 413 kJ/mol; C=C double bond 614 kJ/mol; N≡N triple bond 945 kJ/mol. Specific heat of water: 4.184 kJ/(kg·K). A cyclist riding at 150 W for one hour expends 540 kJ. Charpy and Izod impact toughness tests record results in J and kJ. 1 kJ = 1,000 J = 239.0 cal = 0.94782 BTU = 0.27778 Wh.
About Gigawatt-Hours
A gigawatt-hour (GWh) is the energy from 1 GW for one hour - exactly 3.6 TJ. National electricity generation is reported in annual GWh: Ireland ~32,000 GWh/year; France ~496,000 GWh/year. The Hornsea One offshore wind farm (1.12 GW) generates ~4,000 GWh/year. The Bath County Pumped Storage (3 GW, USA) stores ~24 GWh. World total battery storage capacity reached ~1,600 GWh by end-2022. Energy of 1 megaton TNT ≈ 1.162 GWh. 1 GWh = 3.6 TJ = 1,000 MWh = 3.412 × 10⁹ BTU.
Quick Reference Table
| Kilojoules (kJ) | Gigawatt-Hours (GWh) |
|---|---|
| 1 kJ | 2.778 × 10-10 GWh |
| 2 kJ | 5.556 × 10-10 GWh |
| 5 kJ | 1.389 × 10-9 GWh |
| 10 kJ | 2.778 × 10-9 GWh |
| 25 kJ | 6.944 × 10-9 GWh |
| 50 kJ | 1.389 × 10-8 GWh |
| 100 kJ | 2.778 × 10-8 GWh |