Natural Gas Energy Conversion Factors

Energy Conversion Factors

Use the following conversions to estimate your gas usage.  The natural gas supplied to your home has an energy content of about 1000 BTU's/cubic foot.  A typical water heater might have a BTU rating of 40,000 BTU/hour.  A BTU is defined as the amount of energy required to raise the temperature of one pound of water, at one degree Fahrenheit.

1 CF (Cubic Feet) = Approx. 1,000 BTU's
1 CCF    = 100  CF = 1 Therm
1 Therm = 100,000 BTU's = 100 CF =  0.1 MCF
10 Therms  = 1 MCF
1 MCF   = 1,000 CF  = 10 CCF = 10 Therms
1 Quad  = 10 ⁹ MCF  = 10¹⁰  Therms =  10¹⁵ BTU's
8.338 pounds = 1  gallon of water
1 kWh = 3,413 BTU's