You are here: Technical Resources > Links General Hydrogen Data and Information from Industrial Gas Suppliers Air Liquide Air Products Praxair BOC Other Links Hydrogen Videos for Sale Hydrogen Weight and Volumetric Conversion Tables Energy Values (Btu/lb, Btu/kg, MMJ/kg) for hydrogen and other common fuels Hydrogen liquid to gas and gas to liquid calculator General Unit Conversion Calculator Thermophysical Properties of Hydrogen