Convert Deciliter (dL) to Gallon (US) (gal (US)) instantly.
About these units
Deciliter (dL)
A deciliter, 1/10 of a liter, appears prominently in medical diagnostics—especially in blood testing. Many laboratory measurements use dL as the denominator, such as mg/dL for blood glucose or cholesterol levels. In Europe, food packaging sometimes lists nutritional values per deciliter, especially for dairy products and soups. The dL is just large enough to be meaningful while still small enough for dietary and medical precision. Though not as common as liters or milliliters, the deciliter serves specialized roles where moderate scale and medical tradition intersect.
Gallon (US) (gal (US))
The US gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. It is widely used in American commerce for gasoline, milk, water, and other household liquids. Its historical roots lie in old English wine and ale gallons, whose varying definitions ultimately led to divergent US and UK systems. Today, the US gallon remains deeply embedded in American culture, especially in automotive contexts—fuel economy ratings such as "miles per gallon" (MPG) illustrate its everyday relevance. Despite the global shift toward metric volume units, the US gallon persists due to familiarity and regulatory inertia. It remains an iconic unit, symbolizing uniquely American measurement traditions.