The average barrel of domestic crude oil weighs 302.82 pounds. This is because the average gallon of crude oil weighs 7.21 pounds, and there are 42 gallons in a barrel. Forty-two times 7.21 equals 302.82.
The average domestic crude oil also has a gravity of 32 degrees. According to the United States Energy Information Administration, oil refineries in the United States produce about 19 gallons of gasoline for car motors from one barrel of crude oil. The rest of the barrel becomes other products, such as distillate and residual fuel oils, jet fuel and petroleum coke. Crude oil can also be used to create lubricants, asphalt, charcoal briquettes, wax crayons, birthday candles, polyester shirts and toothbrushes.