Convert Gigajoule per cubic metre to Megawatt-hour per cubic metre
Convert Gigajoule per cubic metre (GJ/m³) to Megawatt-hour per cubic metre (MWh/m³) instantly and accurately.
Conversion Formula
MWh/m³ = GJ/m³ × 0.2777777778
About Gigajoule per cubic metre
The gigajoule per cubic metre (GJ/m³) equals exactly 10⁹ J/m³. Used for the energy density of high-energy-density materials and liquefied fuels: LNG ≈ 22.2 GJ/m³, liquid hydrogen ≈ 8.49 GJ/m³, petrol ≈ 34.2 GJ/m³. Also useful for large-scale thermal energy storage reservoirs. 1 GJ/m³ = 10³ MJ/m³ = 10⁹ J/m³.
About Megawatt-hour per cubic metre
The megawatt-hour per cubic metre (MWh/m³) equals exactly 3.6 × 10⁹ J/m³. Used in large-scale energy storage infrastructure - pumped hydro, grid-scale battery installations, and thermal storage plants. Petrol ≈ 9.5 MWh/m³, LNG ≈ 6.2 MWh/m³, Li-ion pack ≈ 0.56 MWh/m³. 1 MWh/m³ = 3.6 GJ/m³ = 3600 MJ/m³.
Quick Reference Table
| Gigajoule per cubic metre (GJ/m³) | Megawatt-hour per cubic metre (MWh/m³) |
|---|---|
| 1 GJ/m³ | 0.277778 MWh/m³ |
| 2 GJ/m³ | 0.555556 MWh/m³ |
| 5 GJ/m³ | 1.38889 MWh/m³ |
| 10 GJ/m³ | 2.77778 MWh/m³ |
| 25 GJ/m³ | 6.94444 MWh/m³ |
| 50 GJ/m³ | 13.8889 MWh/m³ |
| 100 GJ/m³ | 27.7778 MWh/m³ |