1 barrel = 158.98 liters =42 gallons. American 1 gallon =3.785 liters, British 1 gallon =4.546 liters.

Crude oil is a mixture, so its density is a range. According to its density, it can be divided into four categories: light crude oil (density < 0.87 g/cm3), medium crude oil (≥ 0.87 ~ 0.92 g/cm3), heavy crude oil (≥ 0.92 ~ 1.0g/cm3) and overweight crude oil (≥ 65438).

We can calculate according to the density of crude oil, so the weight of a barrel of crude oil ranges from 0.3 18 tons to 0. 158 tons.

reference data

China crude oil futures network:/html/201702-17/20170217085139.htm.