In this post, I want to share you a quite simple yet useful post, which is LNG conversion table. For your information, I have been working in several LNG regasification project, therefore this conversion is like my daily “menu”.

I hope you find this useful.

**Conversion from tonnes LNG**

tonnes LNG = 2.21 m^{3} LNG (liquid) ^{(1)}

tonnes LNG = 0.00127 m^{3} gas (n) ^{(2)}

tonnes LNG = 44.96 ft^{3} gas (n) ^{(2)}

tonnes LNG = 47.53 ft^{3} gas standard (scf) ^{(3)}

tonnes LNG = 51.02 MMBTU

**Conversion from tonnes m ^{3} LNG (liquid) ^{(1)}**

m^{3} LNG (liquid) ^{(1)} = 0.45 tonnes LNG

m^{3} LNG (liquid) ^{(1)} = 571 m^{3} gas (n) ^{(2)}

m^{3} LNG (liquid) ^{(1)} = 20.17 ft^{3} gas (n) ^{(2)}

m^{3} LNG (liquid) ^{(1)} = 21.31 ft^{3} gas standard (scf) ^{(3)}

m^{3} LNG (liquid) ^{(1)} = 23.12 MMBTU

**Conversion from m ^{3} gas (n) ^{(2)}**

m^{3} gas (n) ^{(2)} = 7.85 x 10^{-4} tonnes LNG

m^{3} gas (n) ^{(2)} = 1.75 x 10^{-3} m^{3} LNG (liquid) ^{(1)}

m^{3} gas (n) ^{(2)} = 3.53 x 10^{-2} ft^{3} gas (n) ^{(2)}

m^{3} gas (n) ^{(2)} = 3.73 x 10^{-2} ft^{3} gas standard (scf) ^{(3)}

m^{3} gas (n) ^{(2)} = 37.33 MMBTU

**Conversion from ft ^{3} gas (n) ^{(2)}**

ft^{3} gas (n) ^{(2) }= 2.22 x 10^{-8} tonnes LNG

ft^{3} gas (n) ^{(2) }= 4.96 x 10^{-5} m^{3} LNG (liquid) ^{(1)}

ft^{3} gas (n) ^{(2) }= 2.83 x 10^{-2} m^{3} gas (n) ^{(2)}

ft^{3} gas (n) ^{(2)} = 1.05 ft^{3} gas standard (scf) ^{(3)}

ft^{3} gas (n) ^{(2) }= 1.15 x 10^{-3} MMBTU

**Conversion from ft ^{3} gas standard (scf) ^{(3)}**

ft^{3} gas standard (scf) ^{(3)}= 2.10 x 10^{-8} tonnes LNG

ft^{3} gas standard (scf) ^{(3)}^{ }= 4.69 x 10^{-5} m^{3} LNG (liquid) ^{(1)}

ft^{3} gas standard (scf) ^{(3)}^{ }= 2.68 x 10^{-2} m^{3} gas (n) ^{(2)}

ft^{3} gas standard (scf) ^{(3)} = 0.948 ft^{3} gas (n) ^{(2)}

ft^{3} gas standard (scf) ^{(3)}^{ }= 1.09 x 10^{-3} MMBTU

**Conversion from MMBTU**

MMBTU = 1.96 x 10^{-2} tonnes LNG

^{MMBTU }= 4.33 x 10^{-2} m^{3} LNG (liquid) ^{(1)}

^{MMBTU }= 24.69 m^{3} gas (n) ^{(2)}

MMBTU = 872.2 ft^{3} gas (n) ^{(2)}

^{MMBTU }= 920.1^{ } ft^{3} gas standard (scf) ^{(3)}

Note:

(1) Calculated according to ISO 6579 (T = -160^{o}C)

(2) Calculated according to ISO 6976 (0^{o}C / 0^{o}C, 1.01325 bar)

(3) Standard condition (15^{o}C / 15^{o}C, 1.01325 bar)

References:

The LNG Industry GIIGNL Annual Report 2018 (https://giignl.org/)

Good content, However some data also depend on its composition, i.e not every LNG had density 0.45 but as approximate is OK. you may know about lean LNG or Rich LNG. Also usually we used ratio 1:600 for volume of LNG when converted to gas (approximate) instead of 571. Another useful information like how much power 1 can generate for 1 m3 LNG , or how mu.ch duty required to vaporize 1 m3 LNG.

Thank you Pak Arief for leaving comment in my blog 🙂

m3 gas (n) (2) = 37.33 MMBTU, Is this correct? i thought 1 m^3 natural gas = 0.035315 mmbtu

Hello Anshuman,

I rechecked the source, 1 m3 gas = 33.73 MMBTU

Good info here capraenergy.com/ng-lng-unit-conversion-calculator/

LNG of various origins

Hi Adam,

Thank you for sharing the information 🙂