Convert Femtoliter (fL) to Barrel (US) (bbl (US)) instantly.
About these units
Femtoliter (fL)
A femtoliter represents 10⁻¹⁵ liters and is commonly used in hematology, particularly in describing red blood cell size. A typical red blood cell has a volume of roughly 80–100 fL, making this unit ideal for medical diagnostics. Beyond medicine, femtoliters are used in microfluidics and nanoparticle research, where reaction chambers or droplets often hold only a few dozen femtoliters of liquid. The femtoliter exemplifies how modern science pushes measurement into realms dominated by statistical motion, molecular interactions, and quantum effects—scales that once seemed impossible to quantify.
Barrel (US) (bbl (US))
The US barrel is a unit with multiple definitions depending on the industry, though the most common general-purpose US barrel is 31.5 US gallons, used historically for dry goods, ale, and various agricultural products. In practice, the US barrel arose from traditional cask-making, where wooden barrels of different shapes were used for storage and transport. Because their capacity varied widely, different industries standardized the barrel at different volumes. Over time, manufacturers and commercial sectors adopted specific barrel sizes for consistency. Today, the US barrel appears in brewing, winemaking, certain agricultural commodities, and historical documents describing early American commerce. Its varied legacy makes it a fascinating example of an evolving unit shaped by economic necessity and craftsmanship.