Skip to content
Universal Converter

hard coal

solid coal

Modeled on DESNZ 'Coal (industrial)' (UK-context hard coal). DESNZ has no rank-based terms; its categories are functional (industrial/domestic/electricity-generation/coking), and the other three now ship as their own entries because their factors differ by up to 42% per tonne. No density is given by DESNZ (coal is sold by mass) → volume↔mass shows 'not available'. IPCC 2006 Other Bituminous Coal NCV 25.8 MJ/kg, CO2 94,600 kg/TJ. For anthracite/lignite specifically, use the dedicated rank-based entries (IPCC-sourced).

Typical ranges: IPCC 2006 'Other Bituminous Coal' NCV 25.8 MJ/kg (range 19.9–30.5); DESNZ's other coal categories differ (domestic 28.613, coking 30.24, electricity generation 23.826 GJ/tonne) and each ships as its own entry.

  • Coal energy and emission factors vary widely by rank, region and moisture/ash content. This entry is the INDUSTRIAL grade, DESNZ 'Coal (industrial)' (UK context). Coal burned in a household stove ('coal (domestic)') emits about 21% more CO2e per tonne, and the coking and power-station grades differ again — check you are on the right one.
  • No density is available (coal is sold by mass), so volume conversions are not available.

Easily confused with

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

Density

Not available.

Heating values

LHV/NCV
  • 25.405 MJ/kg
HHV/GCV
  • 26.742 MJ/kg
Source for all values above

Emission factors

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

Worked example: 1 kg hard coal converted to every unit
Open in converter →
Converting
1 kg · hard coal

At a glance

All results

Energy

Same energy expressed in other units.

Net calorific value · LHV/NCV

LHV vs. HHV — what is the difference?
source-based every figure below
25.4 MJ
7.057 kWh
0.0254 GJ
24,080 BTU

Gross calorific value · HHV/GCV

source-based every figure below
26.74 MJ
7.428 kWh
0.02674 GJ
25,350 BTU

Mass

exact every figure below
1,000,000 mg
1,000 g
1 kg
0.001 t
~2.20462 lb

Emissions

CO₂ and CO₂e are separate — never derived from each other.

~2.4 kg CO₂e
region + year

Energy density

Energy per unit of mass or volume.

Net calorific value · LHV/NCV

LHV vs. HHV — what is the difference?
25.4 MJ/kg
source-based

Assumptions

  • heating value basis: energy on LHV/NCV basis, 25.405 MJ/kg
  • heating value basis: energy on HHV/GCV basis, 26.742 MJ/kg

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%.Why fuel conversions are approximate Density, calorific value and emission factors are material properties that vary — so fuel results are sourced estimates, not constants.