Convert gas volumes quickly and easily

Select your gas. Then enter a number in any field to automatically calculate the remaining units of measure (UoM).

ArgonAr Carbon DioxideCO₂ HeliumHe HydrogenH₂ NitrogenN₂ OxygenO₂

Argon

Fill in any numeric field to complete the calculations*.

Gas

Cubic Feet (scf)

Cubic Meters (nm³)

Liquid

Gallons (gal)

Liters (l)

Weight

Pounds (lb)

Kilograms (kg)

Short Ton (t)

Metric Ton (mt)

Connect with an Airgas specialist about your gas supply mode needs.

Download Converting Units of Measure for Gas PDF

Please note:

Cubic Feet (scf): Gas measured at 1 atmosphere and 70°F

Cubic Meters (nm³): Gas measured at 1 atmosphere and O°C

For N₂, O₂, Ar and H₂: Liquid measured at 1 atmosphere and boiling temperature

For CO₂: Liquid measured at 21.42 atmosphere and 1.7°F

All calculations display up to the fourth decimal point

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