One barrel equals 42 US gallons or 35 UK (imperial) gallons, or approximately 159 litres (that is 158.9 liters) or 9,702 cubic inches (5.6 cubic feet); 6.29 barrels equal one cubic meter and (on average) 7.33 barrels weigh one metric ton (1000 kilograms).

I bet quite a number of us don't know this fact. However, this conversion depends on the country and usually the volume of crude oil or quality.

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