ounce/gallon (US) Unit Converter

Definition of ounce/gallon (US) unit

Ounce per gallon (US) is a density unit expressing mass in avoirdupois ounces contained in one U.S. liquid gallon. It is commonly used for dilute liquids and suspended or dissolved substances.

History of ounce/gallon (US) unit

The ounce derives from ancient weight systems, while the gallon developed from medieval European measures of liquid capacity. In the United States, the customary gallon was standardized as 231 cubic inches, establishing the modern U.S. liquid gallon of 3.785411784 liters. The avoirdupois ounce, equal to one-sixteenth of a pound and 28.349523125 grams, is the mass unit normally intended in this density expression. Ounce-per-gallon measures became useful in commerce, water treatment, and formulation as relatively convenient customary units for small concentrations.

Applications of ounce/gallon (US) unit

Today, ounce/gallon (US) is used mainly in the United States for describing low concentrations of additives, contaminants, minerals, dyes, and treatment chemicals in water and industrial fluids. For example, a specification may state that a solution contains two ounces of active material per U.S. gallon. In technical work, it may be converted to grams per liter for international reporting.

Complete list of ounce/gallon (US) unit conversion