MCF is the unit of measurement in the oil and gas industry which is used for the measurement of natural gas. It is equal to the volume of 1,000 cubic feet (cf) of natural gas. Therm is a non-SI unit of heat energy. Therm is equal to 100,000 British thermal units (BTU). thm is the symbol of the unit. This is an online unit conversion calculator to convert between MCF and Therms.
MCF is equal to 1,000,000 British thermal units. Sometimes, it stands for 1,000,000 cubic feet instead (M for 'million' or the metric prefix for million, 'mega').
As the natural gas companies measure only the volume and not the energy content, therm unit is used by such industries to convert the volume of gas used to its heat equivalent.