Quart (US)
The US quart equals 2 pints or 32 fluid ounces (~946.353 milliliters). Its name derives from “quartus,” meaning one-fourth of a gallon. Quarts are used in cooking, beverage packaging, and household measures, providing a convenient medium-sized unit. The quart’s integration into the US customary system allows cooks and manufacturers to scale recipes and liquid volumes efficiently.
Gallon (US)
The US gallon, symbol gal, equals 4 quarts, 8 pints, or 128 fluid ounces (~3.785 liters). Its origins trace to English wine and ale measures but were standardized in the US in the 19th century. Gallons are used for beverages, fuel, and large-volume recipes. While metric liters are the dominant unit of measurement in most countries, gallons remain widely used in the United States for everyday and industrial liquid measurements.