Oil barrel bbl

Symbolbbl
SystemUS Customary
QuantityVolume
Value in SI42 US gal = 158.987294928 L (exact)
Defined / adopted1860s Pennsylvania oil fields

About the Oil barrel

The oil barrel is 42 US gallons, exactly 158.987294928 litres. The size was settled by Pennsylvania producers in the 1860s and became the world standard for crude oil prices. Oil is rarely shipped in actual barrels today; the barrel survives as a unit of account.

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