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Universal Converter

butane

liquid gas

DESNZ 'Butane'. LPG is a propane/butane mixture, so its figures sit between the two pure gases — check which one you mean.

Easily confused with

Different products with different numbers. Check you are on the right one.

  • LPG 529.749 kg/m³ 1.55713 kgCO2e/L
  • propane 514.933 kg/m³ 1.54358 kgCO2e/L

Density

575.374 kg/m³

at liquid phase (pressurised)

Heating values

Emission factors

MetricValueScopeRegion / yearSource
CO₂1.74296 kgCO2/Ldirect combustionUK · 2025
CO₂e1.74533 kgCO2e/Ldirect combustionUK · 2025

CO₂ ≠ CO₂e — separate metrics, never converted into one another. What these metrics mean →

Worked example

Open in converter →
Converting
1 L · butane

Conversion results

Energy

Same energy expressed in other units.

26.06 MJ
source-based
7.24 kWh
source-based
0.02606 GJ
source-based
24,700 BTU
source-based
28.25 MJ
source-based
7.847 kWh
source-based
0.02825 GJ
source-based
26,780 BTU
source-based

Mass

0.5754 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.

~1.74 kg CO2
region + year
~1.75 kg CO2e
region + year

Energy density

Energy per unit of mass or volume.

45.3 MJ/kg
source-based
7.24 kWh/L
source-based

Assumptions

  • density: assumed butane density 575.374 kg/m³ at liquid phase (pressurised)
  • heating value basis: energy on LHV/NCV basis, 7.24 kWh/L
  • heating value basis: energy on HHV/GCV basis, 7.847 kWh/L

Sources

Follow each source back to its primary document — that traceability is the point. How conversions work →

Sources

Learn more

HHV/GCV vs LHV/NCV Higher heating value counts the heat of condensing water vapour; lower heating value does not. The gap can be 5–20%.CO₂ vs CO₂e CO₂ is only carbon dioxide; CO₂e bundles other greenhouse gases by their warming potential. There is no conversion between them.