Unit-To-Unit Weight conversion

Pounds to Ounces

1 pound = 16 ounces

Sixteen ounces to the pound, fixed since the avoirdupois system displaced the older 12-ounce troy pound in medieval English commerce.

Formula oz = lb × 16

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Type in either field — the other updates on every keystroke. Need other units? Open the full weight converter.

Pounds to Ounces — quick reference
PoundOunce
1 lb16 oz
2 lb32 oz
3 lb48 oz
4 lb64 oz
5 lb80 oz
10 lb160 oz
15 lb240 oz
20 lb320 oz
25 lb400 oz
50 lb800 oz
100 lb1600 oz
500 lb8000 oz
1000 lb16000 oz
Ounces to Pounds — reverse
OuncePound
1 oz0.0625 lb
2 oz0.125 lb
3 oz0.1875 lb
4 oz0.25 lb
5 oz0.3125 lb
10 oz0.625 lb
15 oz0.9375 lb
20 oz1.25 lb
25 oz1.5625 lb
50 oz3.125 lb
100 oz6.25 lb
500 oz31.25 lb
1000 oz62.5 lb

Worked examples

Common values
SituationFromTo
Loaf of bread1.5 lb24 oz
Bag of flour5 lb80 oz
Newborn baby7.5 lb120 oz
Bowling ball12 lb192 oz
Dumbbell25 lb400 oz

Mental-math shortcut

Multiply by 16. For quick sums do ×10 and ×6 separately: 7 lb is 70 + 42 = 112 oz.

Where this conversion comes up

Baby and pet weights, butchers and postal rates switch between pounds and ounces. A baby of 7 lb 8 oz weighs 7.5 lb, which is 120 oz.

Common mistakes

Decimal pounds are not pounds and ounces: 7.5 lb is 7 lb 8 oz, not 7 lb 5 oz. Troy pounds hold 12 troy ounces, not 16.

Background

The avoirdupois pound has 16 ounces by long custom. The troy pound used for precious metals has only 12 troy ounces.

Learn more

Related guides: Imperial vs metric: differences and quick conversion tricks · US cups to grams: flour, sugar, butter and more · How to scale a recipe up or down: the maths and the science · Troy vs avoirdupois ounces: the weight of precious metals

Frequently asked

How many ounces are in a pound?
1 pound = 16 ounces. In the other direction, 1 ounce = 0.0625 pounds.
What is a pound?
The international avoirdupois pound is defined as exactly 0.45359237 kilograms, agreed by the United States, United Kingdom and four other Commonwealth nations in 1959. Every imperial mass unit derives from it.
What is a ounce?
An avoirdupois ounce is one sixteenth of a pound, or 28.349523125 grams exactly. It is not the same as the troy ounce used for precious metals.
How many ounces are in a pound?
There are 16 avoirdupois ounces in a pound.