pound/gallon (US) Unit Converter

Definition of pound/gallon (US) unit

Pound per gallon (US) is a concentration unit expressing the mass of a dissolved or suspended substance, in avoirdupois pounds, contained in one United States liquid gallon of solution or mixture. It equals approximately 119.826 grams per liter.

History of pound/gallon (US) unit

The pound and the United States gallon developed separately within English customary measurement traditions. The pound originated from historical European weight systems and became standardized in commerce, while the U.S. gallon was defined from the English wine gallon as 231 cubic inches. Expressing concentration in pounds per gallon emerged in American industrial practice, especially where bulk liquids were handled by customary units. Although the metric system later provided grams per liter and kilograms per cubic meter, pound per U.S. gallon remains familiar in technical specifications, manufacturing, agriculture, and environmental work.

Applications of pound/gallon (US) unit

This unit is used to report concentrated liquids and slurries, including fertilizers, pesticides, petroleum additives, paints, pigments, drilling fluids, and industrial chemicals. For example, a product labeled 2 lb/US gal contains two avoirdupois pounds of material per U.S. liquid gallon. Engineers may use it for formulation, dosing, storage, and transport calculations, often converting to grams per liter.

Complete list of pound/gallon (US) unit conversion