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Convert lbs to oz

Convert lbs to oz instantly. 1 lb = 16 oz. Formula, worked examples and a quick reference table.

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lb
oz

One pound equals 16 ounces. To convert any number of pounds to ounces, multiply by 16.

The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.

Weight and mass conversions matter most in three places: shipping, where a rate band can turn on a single kilogram; cooking, where recipes cross between metric grams and imperial ounces; and personal weight, where Britain and Ireland use stones, the United States uses pounds, and everywhere else uses kilograms. Strictly these are mass units rather than weight units, and the distinction only bites in physics, where weight is a force measured in newtons.

lbs to oz formula

ounce = pound × 16

To go the other way, use pound = ounce ÷ 16.

About these units

The international avoirdupois pound is exactly 0.45359237 kilograms — defined in terms of the metric system, not the other way round.

The avoirdupois ounce is 1/16 of a pound. It should not be confused with the troy ounce used for precious metals, which is about 10% heavier.

Pound is also written pounds, lbs and #. Ounce is also written ounces and ozs.

Sources

  1. National Bureau of Standards, "Refinement of Values for the Yard and the Pound", Federal Register, 1 July 1959 — the international yard as exactly 0.9144 m and the avoirdupois pound as exactly 0.45359237 kg.

lbs to oz conversion table

Pound Ounce
1 lb 16 oz
2 lb 32 oz
3 lb 48 oz
5 lb 80 oz
10 lb 160 oz
20 lb 320 oz
25 lb 400 oz
50 lb 800 oz
100 lb 1,600 oz
250 lb 4,000 oz
500 lb 8,000 oz
1,000 lb 16,000 oz

Frequently asked questions

How many ounces are in a pound? +

There are 16 ounces in one pound.

What is 10 lb in oz? +

10 lb equals 160 oz. Multiply 10 by 16.

How do I convert ounce back to pound? +

Use pound = ounce ÷ 16. The converter above handles both directions, or see our dedicated oz to lbs page.

How accurate is this pound to ounce conversion? +

The factor used is 16, carried at full double precision. Where a unit has an exact legal definition the factor is exact rather than approximate. Rounding is applied only to the displayed result, so the answer is never a calculation done on an already-rounded number.

Is there a quick way to estimate lb to oz in my head? +

Multiply by 16. That matches the true factor of 16 exactly, so no adjustment is needed for a mental estimate.