Gallon to US barrel oil Converter (and vice versa)
Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026
This converter allows you to convert gallons [Imp.gal.] to US barrels oil [US.bbl.] or US barrels oil [US.bbl.] to gallons [Imp.gal.]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.
Convert gallons to US barrels oil
There are two simple ways to convert gallons [Imp.gal.] to US barrels oil [US.bbl.]. In the first calculation method, the value in gallons [Imp.gal.] is divided by the rounded conversion factor of 34.9723. The second method multiplies the value in gallons [Imp.gal.] by the rounded conversion factor of 0.0286.
- US barrels oil [US.bbl.] ≈ gallons [Imp.gal.] ÷ 34.9723
- US barrels oil [US.bbl.] ≈ gallons [Imp.gal.] * 0.0286
However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of gallons [Imp.gal.] to US barrels oil [US.bbl.] can be achieved using the following calculation method.
- US barrels oil [US.bbl.] = gallons [Imp.gal.] ÷ 387,096 ÷ 410.718 * 4,546,090
Convert US barrels oil to gallons
Converting US barrels oil [US.bbl.] to gallons [Imp.gal.] is easy and can be done in two ways. The first method involves multiplication, in which the value in US barrels oil [US.bbl.] is multiplied by the rounded conversion factor of 34.9723. The second variant is a division. Here, the value in US barrels oil [US.bbl.] is divided by the rounded conversion factor of 0.0286.
- Gallons [Imp.gal.] ≈ US barrels oil [US.bbl.] * 34.9723
- Gallons [Imp.gal.] ≈ US barrels oil [US.bbl.] ÷ 0.0286
However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of US barrels oil [US.bbl.] to gallons [Imp.gal.] can be achieved using the following calculation method.
- Gallons [Imp.gal.] = US barrels oil [US.bbl.] * 387,096 * 410.718 ÷ 4,546,090
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