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eng.natural-gas-wobbe-index Calculator
Calculates the Wobbe Index from gas higher heating value and specific gravity to assess interchangeability of natural gas with different compositions. Wobbe Index within ±5% of the reference gas ensures interchangeable combustion behaviour in industrial burners and domestic appliances.
Inputs
Higher Heating Value Mj M3
Reference formula or conversion factor shown for context.
Relative Density
Reference formula or conversion factor shown for context.
Results
Wobbe index W (MJ/m³)
A normalised score comparing the result to a reference baseline.
vs reference W_ref (53.5)
Sample size or count used in the calculation.
interchangeability
Sample size or count used in the calculation.
W = HHV/√(relative density)
The value at the specified point or condition.
natural gas typical
The value at the specified point or condition.
appliance design range
The difference between the maximum and minimum values.