Convert a crude oil price quoted in dollars per barrel into dollars per gallon, per liter, per cubic meter and per metric tonne — or into another currency at an exchange rate you enter. A second converter turns volumes between barrels, gallons, liters, cubic meters and tonnes. Calculations run in your browser; no prices are looked up automatically, so enter the current WTI price from the live chart.
Price Converter
Volume Converter
Conversion Factors
- 1 barrel (bbl) = 42 US gallons = 158.987 liters = 0.158987 cubic meters.
- Specific gravity = 141.5 ÷ (API gravity + 131.5). WTI is about 39.6° API (specific gravity ≈ 0.826), Brent about 38°.
- Barrels per tonne = 1,000 ÷ (158.987 × specific gravity) ≈ 7.6 for WTI.
Crude Price vs Pump Price
The crude price per gallon is only one part of what drivers pay. Retail gasoline and diesel prices also include refining margins, distribution and marketing costs and taxes, which vary by country and state. When WTI rises by $1 a barrel, the crude cost of a gallon of fuel rises by about 2.4 cents ($1 ÷ 42).
Frequently Asked Questions
How many gallons are in a barrel of oil?
One US oil barrel is exactly 42 US gallons, or about 158.99 liters.
How do I convert the oil price per barrel to price per liter?
Divide the price per barrel by 158.987. At $90 a barrel, crude costs about $0.566 per liter, or $2.14 per gallon. This is the cost of crude only; gasoline and diesel prices also include refining, distribution and taxes.
How many barrels of oil are in a tonne?
It depends on density. For WTI (about 39.6° API) it is roughly 7.6 barrels per tonne; for heavier crudes it is closer to 6.5–7. The converter uses the API gravity you enter: specific gravity = 141.5 ÷ (API + 131.5).