Cylinders sizes and Conversion data  [ Back to  Gases and Services  ]

Standard cylinder sizes

Conversion data

All gases are measured at 101.325 kPa (abs), 14.695949psia.

Liquid volumes are measured at their boiling points, except for CO2, measured at -16.8°C, 2170 kPa (abs).

Conversion Data Table
  Kilogrammes Nm3 Litres Liquid U.S. Gallons Liquid

1 kg      Ar

           CO2

           He

           H2

           N2

           O2

 1.0

0.59158

0.53411

5.98802

11.7178

0.84372

0.73844

0.71798

0.98547

8.00256

14.0899

1.23669

0.87642

0.18967

0.26033

2.11405

3.72215

0.32670

0.23153
1 Nm3    Ar

  gas     CO2

           He

           H2

           N2

           O2

1.69038

1.87227

0.16700

0.08534

1.18523

1.35421

 1.0

1.21366

1.85406

1.33643

1.20243

1.46577

1.18686

0.32061

0.48742

0.35305

0.31765

0.38722

0.31354
1 L         Ar

 Liquid   CO2

           He

           H2

           N2

           O2

1.39280

1.01475

0.12496

0.07097

0.80861

1.14100

0.82396

0.54199

0.74826

0.83165

0.68224

0.84256

 1.0 0.26417

1 U.S.    Ar

 Gallon  CO2

 Liquid   He

           H2

           N2

           O2

5.27232

3.84192

0.47303

0.26866

3.06091

4.31916

3.11902

2.05201

2.83249

3.14814

2.58254

3.18943

 3.78541 1.0

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