Barrel (US liquid): unit of volume traditionally used for measuring liquids abbreviated as "bbl". Its exact size depends on the context or substance being measured. In US most fluid barrels (apart from oil) are 31.5 US gallons (approximately 119 litters), but beer is 31 US gallons (117 litters).
Cubic Inch: is a unit of volume in the imperial and U.S. customary systems of measurement. It is equivalent to the volume of a cube with sides each measuring one inch. The symbol for cubic inches is "in3" or "cu in."
Interesting facts:
Interesting facts:
- Cubic inches have been historically used in aviation to express the displacement of aircraft engines. However, the aviation industry now commonly uses the metric system for many measurements.
Related conversions