Heating Values of Fuel Gases

Combustion heat values for gases like acetylene, blast furnace gas, ethane, biogas and more - Gross and Net values.

Fuel GasGross Heating Value (Btu/ft³)Net Heating Value (Btu/ft³)Gross Heating Value (Btu/lb)Net Heating Value (Btu/lb)
Acetylene (ethyne) - C2H2149814472156920837
Ammonia (Liquefied, cooled compressed)8017
Benzene374135901815017418
Blast Furnace gas929211781178
Blue water gas6550
Butane - C4H10322529772164019976
Butylene (Butene)307728762078019420
Carbon to CO21415014150
Carbon to CO39603960
Carbon monoxide - CO32332343684368
Carburetted Water Gas5505081144010566
Coal gas14916500
Coke Oven Gas5745141704815266
Digester Gas (Sewage or Biogas)6906211131610184
Ethane - C2H6178316302219820295
Ethyl alcohol saturated with water154812804
Ethylene163115302188420525
Hexane466743152052618976
Hydrogen (H2)3252756108451628
Hydrogen Sulphide6727479
Landfill Gas476
Methane - CH410119102381121433
Methyl alcohol saturated with water8189603
Naphthalene585917298
Natural Gas (typical)950-1150850-105019500-2250017500-22000
Octane saturated with water623931702054210444
Pentane398136792090819322
Producer gas2470
Propane - C3H8257223712156419834
Propene (Propylene) - C3H6233221812099019630
Propylene233621852104219683
Sasol5004431455013016
Sulphur3940
Toluene440842061829117301
Water Gas (bituminous)26123948814469
Xylene515518410

Conversion Factors

  • 1 Btu/ft³ = 8.9 kcal/m³ = 3.73×10⁴ J/m³
  • 1 Btu/lb = 2,326.1 J/kg = 0.55556 kcal/kg

Notes

Volumetric Heating Values are based on standard temperatures and pressure of dry gas - 60°F and 14.73 psi.