Energy Conversion Factors
CUBIC FEET (cf) BTU's THERMS
1 cf =                                       1 cf
0.001 Mcf
0.000001 MMcf
0.000000001 Bcf
1,000 Btu
1 MBtu
0.001 MMBtu
0.01 Therm
0.001 Dekatherm
1 Btu =                            0.001cf
0.000001 Mcf
0.000000001 MMcf
1E-12 Bcf
1 Btu
0.001 MBtu
0.000001 MMBtu
0.00001 Therm
0.000001 Dekatherm
1 Therm=                            100 cf
0.1 Mcf
0.0001 MMcf
0.0000001 Bcf
100,000 Btu
100 MBtu
0.1 MMBtu
1 Therm
0.1 Dekatherm
1 Mcf=                                  1000cf
1 Mcf
0.001 MMcf
0.000001 Bcf
100000 Btu
1000 MBtu
10 Therm
1 Dekatherm
1 MMBtu =                            1000cf
1 Mcf
0.001 MMcf
0.000001 Bcf
1,000,000 Btu
1000 MBtu
10 Therm
1 Dekatherm
1 Dekatherm =                        1000cf
1 Mcf
0.001 MMcf
0.000001 Bcf
1,000,000 Btu
1000 MBtu
10 Therm
1 Dekatherm
1 Bcf =                   1,000,000,000 cf
1,000,000 Mcf
1,000 MMcf
1 Bcf
1,000,000,000,000 Btu
1,000,000,000 MBtu
1,000,000 MMBtu
10,000,000 Therm
1,000,000 Dekatherm
TO CALCULATE COSTS OF ALTERNATIVE FUELS
Cost / Unit
-------------- x 1,000,000 = cost per 1,000,000 Btu's
Btu / Unit

Example #1 Cost of #2 Oil on a Per Dekatherm basis

$2.79 / Gallon
---------------------------- x 1,000,000 = $20.1444 per 1,000,000 Btu
138,500 Btu / Gallon                            $20.1444 per MMBtu or Dth

The average retail price for a gallon of #2 oil in the NY Tri-State area on July 11, 2007 was $2.79/gallon less any applicable taxes.

Example #2 Cost of #6 Oil on a Per Dekatherm basis

$1.64 / Gallon
---------------------x1,000,000 = $10.7049 per 1,000,000 Btu
153,200 Btu / Gallon                 $10.7049 per MMBtu or Dth

The average retail price for a gallon of #6 oil in the NY Tri-State area on July 11, 2007 was $1.64/gallon less any applicable taxes.
HEATING VALUE TABLES *
Electricity     3,413 Btu's/Kwh
Natural Gas  1,000 Btu's/cf
Gasoline       125,000 Btu's/gallon
#2 Oil           138,500 Btu's/gallon
#4 Oil           145,850 Btu's/gallon
#6 Oil           153,200 Btu's/gallon
Propane        91,523 Btu's/gallon

*Assumes 100% efficiency