butane
liquid gasDESNZ '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.
Density
575.374 kg/m³
at liquid phase (pressurised)
Heating values
LHV/NCV
- 45.3 MJ/kg
- 7.24 kWh/L
HHV/GCV
- 49.1 MJ/kg
- 7.847 kWh/L
Source for all values above
Emission factors
- CO₂ 1.74296 kgCO₂/Ldirect combustion · UK · 2025
- CO₂e 1.74533 kgCO₂e/Ldirect combustion · UK · 2025
| Metric | Value | Scope | Region / year | Source |
|---|---|---|---|---|
| CO₂ | 1.74296 kgCO₂/L | direct combustion | UK · 2025 | |
| CO₂e | 1.74533 kgCO₂e/L | direct combustion | UK · 2025 |
CO₂ ≠ CO₂e — separate metrics, never converted into one another. What these metrics mean →
Worked example: 1 L butane converted to every unit
Converting
1 L · butane
At a glance
- Energy · LHV 7.24 kWh source-based
- Mass 0.5754 kg source-based
- CO₂ ~1.74 kg CO₂ region + year
- CO₂e ~1.75 kg CO₂e region + year
All results
Energy
Same energy expressed in other units.
Net calorific value · LHV/NCV
source-based every figure below
26.06 MJ
7.24 kWh
0.02606 GJ
24,700 BTU
Gross calorific value · HHV/GCV
source-based every figure below
28.25 MJ
7.847 kWh
0.02825 GJ
26,780 BTU
Mass
Volume
exact every figure below
1,000 mL
1 L
0.001 m³
~0.264172 US gal
~0.219969 imp gal
~0.00628981 bbl
Emissions
CO₂ and CO₂e are separate — never derived from each other.
region + year every figure below
~1.74 kg CO₂
~1.75 kg CO₂e
Energy density
Energy per unit of mass or volume.
Net calorific value · LHV/NCV
source-based every figure below
45.3 MJ/kg
7.24 kWh/L
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 →