scf m scf per minute. In both cases, the units are standard cubic feet, measured at some (not speciofied) standard temperature and pressure, not the actual. So all you need is mm = 1000*1000 = 1 million, and there are 1440 minutes in a day. 1mmscfd = 1000000/1440 scfm = 694.4 scfm. Flag. Post any conversion related questions and discussions here. More @Wikipedia
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