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LNG Volume Conversion Calculator

Work out lng volume conversion instantly with clear inputs, formula shown and shareable results.

About LNG Volume Conversion Calculator

Liquefied natural gas occupies about 1/600th of its gaseous volume, so one cubic metre of LNG regasifies to roughly 600 cubic metres of gas. LNG is traded by energy content, so volume must be converted through density and heating value to gigajoules or MMBtu, which is the actual unit of sale.

Formulas

LNG conversions

Gas volume = LNG volume x expansion ratio; mass (t) = LNG volume x density / 1000

Energy

Energy (GJ) = gas volume x heating value (MJ/m3) / 1000; MMBtu = GJ x 0.9478

Worked example

With the default values below, LNG Volume Conversion Calculator returns Regasified Gas Volume of 87,000,000. Change any input above and every figure here is recalculated in your browser.

Inputs used

LNG Volumeminimum 0 m3
145,000 m3
LNG Densityminimum 0.01 kg/m3
450 kg/m3
Regasification Expansion Ratiominimum 1
600
Heating Valueminimum 0.01 MJ/m3 gas
39 MJ/m3 gas

Results

Regasified Gas Volume
87,000,000
LNG Mass
65,250.00
Energy Content
3,393,000
Energy In MMBtu
3,215,943

Step by step

  1. 1Values used
  2. 2LNG conversions
  3. 3Energy
  4. 4Regasified Gas Volume= 87,000,000
  5. 5LNG Mass= 65,250.00
  6. 6Energy Content= 3,393,000
  7. 7Energy In MMBtu= 3,215,943

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why does LNG density vary?

Composition. Richer LNG with more ethane and propane is denser and has a higher heating value; lean LNG is close to pure methane at around 425 kg/m3.

What is a standard cargo?

A conventional LNG carrier holds 145,000-174,000 m3, equivalent to roughly 3.3-4.0 trillion Btu, or about 3.4 billion cubic feet of regasified gas.

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