U.S. Energy Information Administration - EIA - Independent Statistics and Analysis
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Frequently Asked Questions
What are Ccf, Mcf, Btu, and therms? How do I convert natural gas prices in dollars per Ccf or Mcf to dollars per Btu or therm?
Ccfâthe volume of 100 cubic feet (cf)
Mcfâthe volume of 1,000 cubic feet
MMBtuâ1,000,000 British thermal units
ThermâOne therm equals 100,000 Btu, or 0.10 MMBtu
You can convert natural gas prices from one price basis to another with these formulas (assuming a heat content of natural gas of 1,037 Btu per cubic foot):
$ per Ccf divided by 1.037 equals $ per therm
$ per therm multiplied by 1.037 equals $ per Ccf
$ per Mcf divided by 1.037 equals $ per MMBtu
$ per Mcf divided by 10.37 equals $ per therm
$ per MMBtu multiplied by 1.037 equals $ per Mcf
$ per therm multiplied by 10.37 equals $ per Mcf
The heat content of natural gas may vary by location and by type of natural gas consumer, and it may vary over time. Consumers and analysts should contact natural gas distribution companies or natural gas suppliers for information on the heat content of the natural gas that they supply to their customers. Some natural gas distribution companies or utilities may provide this information on customers' bills.