LNG
liquid gasDESNZ 2025 'LNG' — chemically natural gas, but ~600× denser in energy per volume than gaseous natural gas. Per-litre CO2e in DESNZ = 1.17797 kgCO2e/L. The per-L heating value is derived from DESNZ's liquid density × gravimetric CV.
- 1 m³ (or 1 L) of LIQUEFIED natural gas is NOT the same as 1 m³ of GASEOUS natural gas: LNG is ~600× denser in energy per volume. Never convert LNG volume directly to gas volume — go via mass/energy. This entry is the liquid phase.
Density
452.489 kg/m³
at liquefied (cryogenic, ~−162 °C)
Heating values
LHV/NCV
HHV/GCV
Emission factors
| Metric | Value | Scope | Region / year | Source |
|---|---|---|---|---|
| CO2e | 1.17797 kg co2e per l | direct combustion | UK · 2025 |
CO₂ ≠ CO₂e — separate metrics, never converted into one another. Why? →
Worked example
Open in converter →Converting
1 L · LNG
Energy
Same energy expressed in other units.
20.7 MJ
source-based
5.75 kWh
source-based
0.0207 GJ
source-based
19,620 BTU
source-based
22.93 MJ
source-based
6.37 kWh
source-based
0.02293 GJ
source-based
21,740 BTU
source-based
Mass
0.4525 kg
source-based
Volume
1,000 mL
exact
1 L
exact
0.001 m³
exact
0.264172 US gal
exact
0.219969 imp gal
exact
0.00628981 bbl
exact
Emissions
CO₂ and CO₂e are separate — never derived from each other.
~1.18 kg CO2e
region + year
Energy density
Energy per unit of mass or volume.
45.74 MJ/kg
source-based
5.75 kWh/L
source-based
Assumptions
- density: assumed LNG density 452.489 kg/m³ at liquefied (cryogenic, ~−162 °C)
- heating value basis: energy on LHV/NCV basis, 5.750 kWh/L
- heating value basis: energy on HHV/GCV basis, 6.370 kWh/L
Sources
Follow each source back to its primary document — that traceability is the point. How conversions work →