Convert pounds to ounces

Pound

Overview

The pound (symbol: lb) is a traditional mass unit within the British Imperial and U.S. customary systems. The modern international avoirdupois pound is fixed at exactly 0.45359237 kg and subdivides into 16 avoirdupois ounces for convenient fractional use.

Historical Background

Originating from the Roman libra, the pound saw many regional definitions throughout history. In the 1200s, the avoirdupois system standardized a pound consisting of 16 ounces—a choice driven by the ease of dividing 16 by 2, 4, and 8. This structure was globally codified in 1959.

Contemporary Usage

In the United States, pounds remain the default for body weight, grocery items, and general commerce. The United Kingdom has adopted metric measurements officially, but pounds still appear on packaged foods and in weight references alongside stones (1 stone = 14 lb).

Ounce

Overview

The ounce (symbol: oz) is a mass unit in both the Imperial and U.S. customary systems. One international avoirdupois ounce is exactly 28.349523125 g—precisely one-sixteenth of an avoirdupois pound.

Historical Background

The term derives from the Roman uncia (“twelfth part”), referring to the twelve equal parts of a standard copper bar used to define the pound. Over time, various “ounces” existed—Dutch (100 g), French (~30.59 g), Spanish (~28.75 g)—before the 1959 agreement on the current definition.

Contemporary Usage

Ounces are still widely used in the U.S. for packaged foods, portion sizes, and postal weights. Although the U.K. is officially metric, you’ll encounter ounces in certain contexts like restaurant menus.

Pound → Ounce Conversion Table

Wie man konvertiert

• 1 lb = 16 oz

• 1 oz = 0.0625 lb

Beispiel

Convert 15 lb to ounces: