According to Platts.com, a Barrel is a volumetric unit of measurement
for crude oil and petroleum products. Based on the two references
below, there are 42 U.S. gallons in a barrel of oil:
Platts Global Energy
Glossary -- Barrel
California Energy Commission Update:
Gasoline Supplies and Prices in California
Based on "Life Barrel of Oil: Facts About Oil", published by the
American Petroleum Institute, there are 19.4 gallons per Barrel of
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Based on the references above:
19.4 ÷ 42 x 100 = 46.2 (46.1904761904761904761904761904762)
46.2 percent of a barrel of oil can be made into gasoline.
However, some sources say that a barrel yields 19.5 - 20 gallons of
U.S. Geological Survey
Zeolites, by Robert L. Virta (20 gallons of gasoline per barrel)
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Hence, given these info:
19.4 + 19.5 + 20 = 58.9
58.9 ÷ 3 = 19.6 gallons of gasoline per barrel (average)
19.63 ÷ 42 x 100 = 46.7 (46.7380952380952380952380952380952)
46.7 percent of a barrel of oil can be made into gasoline (average)
In case you want to know more, you can search through the results of
the last links below.
"gallons in a barrel"
"gallons of gasoline per barrel"
average gasoline "barrel of oil"
I hope this helps you. Should you have any comments/questions, please
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attend to you as soon as possible. Thanks for asking.