LPG
liquid gasDESNZ 'LPG' (mixed propane/butane). IPCC 2006 Liquefied Petroleum Gases NCV 47.3 MJ/kg, CO2 63,100 kg/TJ. See separate 'propane' and 'butane' entries for the pure gases.
- LPG density and energy per litre depend on the propane/butane mix and on the liquid vs gas phase. Litre figures here are for the pressurised liquid.
Density
529.749 kg/m³
at liquid phase (pressurised)
Heating values
LHV/NCV
HHV/GCV
Emission factors
| Metric | Value | Scope | Region / year | Source |
|---|---|---|---|---|
| CO2 | 1.55491 kg co2 per l | direct combustion | UK · 2025 | |
| CO2e | 1.55713 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 · LPG
Energy
Same energy expressed in other units.
24.34 MJ
source-based
6.761 kWh
source-based
0.02434 GJ
source-based
23,070 BTU
source-based
26.13 MJ
source-based
7.259 kWh
source-based
0.02613 GJ
source-based
24,770 BTU
source-based
Mass
0.5297 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.
~1.55 kg CO2
region + year
~1.56 kg CO2e
region + year
Energy density
Energy per unit of mass or volume.
45.94 MJ/kg
source-based
6.761 kWh/L
source-based
Assumptions
- density: assumed LPG density 529.749 kg/m³ at liquid phase (pressurised)
- heating value basis: energy on LHV/NCV basis, 6.761 kWh/L
- heating value basis: energy on HHV/GCV basis, 7.259 kWh/L
Sources
Follow each source back to its primary document — that traceability is the point. How conversions work →