Using CTA data,
| Type of Gasoline | Energy Content (BTU/gallon LHV) | Natural Gas Properties | Energy Content (LHV) |
| Conventional gasoline | 116,090 | Energy - Volume Basis | 983 BTU/CF |
| Reformulated or low-sulfur gasoline | 113,602 | Energy - Mass Basis | 20,267 BTU/lb |
| CA reformulated gasoline | 113,927 |
However, Wikipedia's Gasoline Gallon Equivalent article refers to the EPA's Fuel Economy Impact Analysis of RFG, which uses 114,000 BTU/gallon LHV (Winter Maximum) as the basis for their GGE calculations. The US DoE recommended data in the Transport Energy Data book as the basis. However, in the USA, the Department of Commerce in each state determines the basis for pricing so there is no national standard for energy content. Presumably, the natural gas utilities will also incorporate their own pipeline gas analysis in the GGE calculation as well. The Wikipedia's GGE article also uses 900 BTU/CF for natural which is close to the rule of thumb value of 1000 BTU/CF HHV.
Using Reformulated Gasoline, 113,602 BTU/gallon / 983 BTU/CF = 115.57 CF/gallon . Therefore, 1 GGE = 115.57 CF of natural gas.
Similarly, 113,602 BTU/gallon / 20267 BTU/lb = 5.605 lb/gallon. Therefore, 1 GGE = 5.605 lb of natural gas. This is slightly lower that the 5.66 lb suggested by PG&E.
1 gallon = 113,602 BTU
1 BTU = 1/113,602 gal
1 MMBTU = 1/113,602 x 106 gal = 8.80 gal
In terms of Gasoline:
| Price Posted | Multiply by | To Get Gasoline Equivalent Price |
| $/kg | 0.00658 | ¢/GLE |
| $/lb | 5.605 | $/GGE |
| $/lb | 4.88 | $/GGE (California) |