Quart
A quart (qt) is a US customary unit of volume commonly used for measuring liquids like milk, juice, and cooking ingredients. One quart equals 4 cups, 2 pints, or 32 fluid ounces, making it a convenient size for everyday food and beverage containers. The word comes from “quarter,” representing one-quarter of a US gallon.
Quarts can be confusing in international contexts because the US and UK (Imperial) systems define the quart differently. A conversion tool helps ensure correct results when switching between quarts, liters, gallons, and other units used around the world.
Liter
A liter (L) is a common unit of volume in the metric system. It represents the amount of space that one cubic decimeter occupies, making it perfect for measuring liquids and everyday containers. You’ll see liters used for beverages, fuel, cleaning products, and anything that pours — from water bottles to milk cartons.
Because liters are part of the metric system, they convert cleanly with milliliters (1 L = 1000 mL) and cubic meters (1 m³ = 1000 L). When switching between metric and US or UK units — like gallons, cups, or fluid ounces — a conversion tool provides quick and accurate results, especially in cooking or travel.