fuel oil
liquid oilDESNZ has no single 'heating oil' label. This entry uses DESNZ 'Fuel Oil' (heavier industrial/boiler grade). UK DOMESTIC heating oil is usually 'Gas Oil' (see diesel notes) or kerosene-type 'Burning Oil' (see kerosene). IPCC 2006 Residual Fuel Oil NCV 40.4 MJ/kg, CO2 77,400 kg/TJ; Gas/Diesel Oil is the alternative mapping. EIA US: No.2 heating oil ~138,500 Btu/gal.
- 'Heating oil' is not one product, and this entry is the HEAVIEST grade: DESNZ 'Fuel Oil' (983.284 kg/m³), the residual bunker/industrial oil. Domestic heating oil is a lighter distillate — UK '28 second' kerosene is the 'burning oil' entry, and gasoil-grade heating oil (including German/Austrian Heizöl EL) is closest to 'gas oil'. Those differ from this entry by up to 15% per litre, so check you are on the right one.
Easily confused with
Different products with different numbers. Check you are on the right one.
- gas oil 853.971 kg/m³ 2.75541 kgCO2e/L
- burning oil 802.568 kg/m³ 2.54016 kgCO2e/L
- crude oil
Density
983.284 kg/m³
at 15 °C (fuel-properties basis)
Heating values
Emission factors
| Metric | Value | Scope | Region / year | Source |
|---|---|---|---|---|
| CO₂ | 3.16262 kgCO2/L | direct combustion | UK · 2025 | |
| CO₂e | 3.17492 kgCO2e/L | direct combustion | UK · 2025 |
CO₂ ≠ CO₂e — separate metrics, never converted into one another. What these metrics mean →
Worked example
Open in converter →Conversion results
Energy
Same energy expressed in other units.
Mass
Volume
Emissions
CO₂ and CO₂e are separate — never derived from each other.
Energy density
Energy per unit of mass or volume.
Assumptions
- density: assumed fuel oil density 983.284 kg/m³ at 15 °C (fuel-properties basis)
- heating value basis: energy on LHV/NCV basis, 11.131 kWh/L
- heating value basis: energy on HHV/GCV basis, 11.841 kWh/L
Sources
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