An oil barrel is 42 US gallons.
Oil barrels to Imperial quarts Converter — bbl to imp qt
Convert Oil barrel (bbl) to Imperial quart (imp qt) using the exact conversion factor (1 oil barrel = 139.889263 imperial quart). See the formula, worked examples, conversion table, history, and common uses.
Oil barrels to Imperial quarts converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
An imperial quart is one quarter of an imperial gallon.
Result = input x 0.1589872949 / 0.0011365225.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Oil barrels to Imperial quarts
Oil barrel and Imperial quart appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Specifically: An oil barrel is 42 US gallons, and an imperial quart is one quarter of an imperial gallon.
Formula
imperial quarts = oil barrels × 139.889263018
This factor comes from each unit's defined relationship to the category's base unit: 1 oil barrel equals 0.158987294928 base units, and 1 imperial quart equals 0.0011365225 base units, so dividing one by the other gives the direct oil barrel-to-imperial quart factor of 139.889263018.
Simple example
1 bbl × 139.889263 = 139.889263 imp qt
1 oil barrel = 139.889263 imperial quarts.
Real-world example
10 bbl × 139.889263 = 1,398.89263 imp qt
10 oil barrels = 1,398.89263 imperial quarts.
Conversion table
| Oil barrel (bbl) | Imperial quart (imp qt) |
|---|---|
| 1 bbl | 139.889263 imp qt |
| 5 bbl | 699.4463151 imp qt |
| 10 bbl | 1,398.89263 imp qt |
| 25 bbl | 3,497.231575 imp qt |
| 50 bbl | 6,994.463151 imp qt |
| 100 bbl | 13,988.9263 imp qt |
Reverse conversion: Imperial quart to Oil barrel
139.889263 imp qt × 0.007148511461 = 0.9999999999 bbl
139.889263 imperial quarts = 0.9999999999 oil barrels.
oil barrels = imperial quarts × 0.00714851146134
For a page dedicated to this direction, see Imperial quart to Oil barrel.
Understanding the Oil barrel (bbl)
An oil barrel is 42 US gallons.
Understanding the Imperial quart
Imperial quart (imp qt) measures volume. The imperial quart is one-quarter of an imperial gallon: exactly 1.1365225 liters. It is classified as a UK/imperial customary unit.
Where it's used: United Kingdom and Commonwealth countries (historically)
Imperial quart vs. US quart. Like the gallon and pint, the imperial quart is about 20% larger than the US quart, following from Britain's 1824 gallon redefinition.
Uses of the Imperial quart today
- UK/Commonwealth liquid measurement in historical or specialized contexts
History of the Imperial quart
The imperial quart follows directly from the 1824 imperial gallon as one-quarter of it, part of the same UK standardization that diverged from the US gallon system.
Historical origin. Imperial quart was not the invention of a single named person; it developed through the process described above.
Imperial quart — sources
- UK Weights and Measures Act 1824 — Basis for the imperial quart via the imperial gallon.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial quarts are in 1 oil barrel?
1 oil barrel equals 139.889263 imperial quarts, using the exact defined conversion factor rather than an estimate.
How do I convert oil barrel to imperial quart?
Multiply the oil barrel value by 139.889263. The converter above does this instantly to whatever precision you set.
How do I convert imperial quart back to oil barrel?
Use the reverse factor: 1 imperial quart equals 0.0071485115 oil barrels. You can also use the swap control in the converter above to flip the direction instantly.
What is a oil barrel?
Oil barrel (bbl) is a unit of volume.
What is a imperial quart?
Imperial quart (imp qt) measures volume. The imperial quart is one-quarter of an imperial gallon: exactly 1.1365225 liters. It is classified as a UK/imperial customary unit.
Is the oil barrel to imperial quart conversion exact?
Yes. The imperial quart is one-quarter of an imperial gallon: exactly 1.1365225 liters. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between imperial quart vs. us quart?
Like the gallon and pint, the imperial quart is about 20% larger than the US quart, following from Britain's 1824 gallon redefinition.