Conversion Calculator Volume Measures - ALL GASES SCF/ month (millions) SCF/ year (millions) SCF/ day (thousands) SCF/ hour Nm3/ month (millions) Nm3/ year (millions) Nm3/ day (hundreds) Nm3/ hour O2 - OXYGEN ONLY Oxygen (short) tons/ day (TPD) Oxygen Metric tons/ day (t/d) Oxygen gallons/ day Oxygen liters/ day N2 - NITROGEN ONLY Nitrogen (short) tons/ day (TPD) Nitrogen Metric tons/ day (t/d) Nitrogen gallons/ day Nitrogen liters/ day Ar - ARGON ONLY Argon (short) tons/ day (TPD) Argon Metric tons/ day (t/d) Argon gallons/ day Argon liters/ day CO2 ONLY CO2 (short) tons/ day (TPD) CO2 Metric tons/ day (t/d) CO2 gallons/ day CO2 liters/ day 1 year = 365.25 days 1 year = 12 months (1 average month = 30.44 days = 730.5 hours) Results may need to be adjusted if usage is not continuous throughout the month. Scf (standard cubic foot) gas measured at 1 atmosphere and 70°F. Nm3 (normal cubic meter) gas measured at 1 atmosphere and 0°C. Liquid measured at 1 atmosphere and boiling temperature. Your browser does not support script