Assume this is a gas. Different industries use different temperatures for “standard,” including but not limited to
15 °C, 60 °F, 20 °C, and 25 °C. Unless you know which “standard” is meant, the final step is not possible.
Nm³ means the gas is measured at 0 °C and 1 atm (101.325 kPa).
Step (1): Multiply by 24 h/day to get Nm³/day.
Step (2): Multiply by 35.31467 ft³/m³ to get cubic feet/day at 0 °C and 1 atm.
Step (3): Determine “standard” temperature in °C, and multiply by temperature correction factor (273.15 + T)/273.15 to get SCFD.
Step (4) divide by 1 million to get MMSCFD.