Markets & Investing
Oil barrel volume conversion
Use this oil barrel volume conversion calculator to convert entered petroleum barrels, US gallons and litres without assuming density or product yield.
Your inputs
Complete only the fields for your selected method. Use one consistent job or reporting period. Zero means intentionally zero, not unknown. Missing costs and market rates are not added automatically. Currency selection labels amounts; it does not convert exchange rates.
How this calculation works
1 petroleum barrel = 42 US gallons = 158.987294928 litres
Physical volume conversion only. Petroleum barrel is 42 US gallons, not a drum or imperial gallon. Temperature correction, mass, density, refinery yield and different petroleum grades are excluded. Educational arithmetic from entered figures, not an investment recommendation, valuation opinion, forecast or guarantee. Taxes, inflation and foreign-exchange changes are excluded unless explicitly entered. Use one currency throughout; currency selection only changes labels.
What information do I need?
Use records for the same job, equipment or accounting period. Only the fields for your selected entry method are required. An unknown amount is not zero.
Input definitions and where to find them
- Volume on selected basis (selected volume unit): Use matching records or an explicitly identified assumption for volume on selected basis. Unknown is not the same as zero.
- Volume unit: Use matching records or an explicitly identified assumption for volume unit. Unknown is not the same as zero.
Use the Where to find this value controls beside the inputs for available work-it-out helpers. Estimates remain your assumptions; a helper does not verify the source figures.
Worked example
Example amounts use US dollars (USD).
Example answer: Petroleum barrels is 1.00000000 bbl for the illustrative inputs below.
Example inputs
- Volume on selected basis: 1.00 selected volume unit
- Volume unit: Petroleum barrels (42 US gallons)
- Petroleum barrels
- 1.00000000 bbl
- US liquid gallons
- 42.00000000 US gal
- Litres
- 158.98729493 L
These illustrative values are not recommended rates or industry averages. Replace every example input with your own figures.
Use the result well
Use this oil barrel volume conversion calculator to convert entered petroleum barrels, US gallons and litres without assuming density or product yield.
Keep inputs on the same scope and time basis. Calculations retain precision internally; displayed values generally round to two decimal places, with extra precision for very small values and whole-unit rounding where required. Economic comparisons describe your supplied assumptions and do not guarantee future results.
This tool provides business arithmetic. It does not approve engineering designs, establish legal or tax treatment, select equipment or certify safe operating conditions.