Ounces to Pounds Converter

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Convert ounces to pounds using the imperial avoirdupois relation 16 oz = 1 lb. A 32-oz family-size cereal box is 2 lb; a 12-oz can of soda is 0.75 lb. Useful when grocery, postal or recipe figures are reported in ounces but the per-package or shipping rate is calculated in pounds. Browser-local conversion.

Ounce (oz)
Pound (lb)

Ounce (oz) → Pound (lb)

Quick reference table

Ounce (oz)Pound (lb)
1 oz0.0625 lb
2 oz0.125 lb
5 oz0.3125 lb
10 oz0.625 lb
25 oz1.5625 lb
50 oz3.125 lb
100 oz6.25 lb

Glossary

Ounce (oz)

An ounce (avoirdupois) is one sixteenth of a pound, defined as exactly 28.349523125 g since 1959. It is the dominant unit for US food packaging, beverages, postal letters and personal-care products. One fluid ounce of water at 4 °C weighs almost exactly one avoirdupois ounce — a coincidence that helped the unit survive in modern US recipes.

Pound (lb)

A pound (avoirdupois) is exactly 0.45359237 kg by the international 1959 yard-and-pound agreement. It is the everyday US/UK unit for body weight, groceries, gym plates and shipping. Sixteen ounces make one pound; fourteen pounds make one stone (UK only). The symbol "lb" comes from Latin "libra".

Metric system (SI)

The metric system is a decimal system of measurement built around the kilogram for mass, the meter for length and the second for time, with multiples and submultiples expressed as powers of ten (milligram, gram, tonne). Adopted in France in 1799 and codified internationally as the International System of Units (SI) in 1960, it is now the official system in nearly every country and the standard in science.

Imperial / US Customary system

The imperial system is the historical English system of weights and measures whose mass units are the ounce, pound, stone and ton (16 oz = 1 lb, 14 lb = 1 stone, 2,000 lb = 1 US short ton). Codified by the British Weights and Measures Act of 1824 and aligned with US Customary by the 1959 international yard-and-pound agreement (1 lb = 0.45359237 kg exactly), it is still used in the United States and the United Kingdom for everyday weights.

Related tools

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