Pounds to Ounces
Convert pound to ounce instantly — type a value and read the result, with the exact formula shown.
Reviewed by the CalcCafe editorial team · Last updated 1 July 2026 · How we test our tools
Example
1 lb = 16 oz, 5 lb = 80 oz, 10 lb = 160 oz.
Common conversions: pound to ounce
Quick reference for the lb → oz values you are most likely to need, computed with the exact factor the converter above uses. It includes the specific values people most often look up (100 lb, 2 lb, 0.1 lb, 8 lb, 4 lb). See also the reverse converter: Ounce to Pound.
| Pound (lb) | Ounce (oz) |
|---|
| 0.1 lb | 1.6 oz |
| 1 lb | 16 oz |
| 2 lb | 32 oz |
| 3 lb | 48 oz |
| 4 lb | 64 oz |
| 5 lb | 80 oz |
| 8 lb | 128 oz |
| 10 lb | 160 oz |
| 15 lb | 240 oz |
| 16 lb | 256 oz |
| 20 lb | 320 oz |
| 25 lb | 400 oz |
| 30 lb | 480 oz |
| 40 lb | 640 oz |
| 50 lb | 800 oz |
| 60 lb | 960 oz |
| 70 lb | 1,120 oz |
| 75 lb | 1,200 oz |
| 80 lb | 1,280 oz |
| 90 lb | 1,440 oz |
| 100 lb | 1,600 oz |
| 150 lb | 2,400 oz |
| 200 lb | 3,200 oz |
| 250 lb | 4,000 oz |
| 500 lb | 8,000 oz |
| 1,000 lb | 16,000 oz |
Ounce to Pound
| Ounce (oz) | Pound (lb) |
|---|
| 1 oz | 0.0625 lb |
| 5 oz | 0.3125 lb |
| 10 oz | 0.625 lb |
| 50 oz | 3.125 lb |
| 100 oz | 6.25 lb |
How it works
Ounce = Pound × 16. Every value is converted through a single kilogram base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Converting pounds to ounces comes up constantly in everyday situations where a weight is given in whole pounds but a recipe, postage scale, or shipping label wants the finer unit. Cooking and baking are the biggest culprits — a butcher might sell you a 3 lb roast while the recipe lists 48 oz — and parcel pricing, mailing letters, and portioning ingredients for meal prep all lean on the same swap. Knowing that one pound holds 16 ounces lets you move between the two without a calculator.
Both units belong to the avoirdupois system, the everyday imperial and US customary scale used across the United States and, informally, in the UK. Unlike the tidy base-10 jumps of the metric system, this one is built on 16: the avoirdupois pound was historically divided into 16 ounces, which is why neither side divides cleanly by ten. Both ultimately trace back to the international pound, defined as exactly 0.45359237 kilograms, so the 16-to-1 relationship is exact rather than approximate.
The rule of thumb is simply to multiply pounds by 16, and a handy shortcut is to double four times (×2, ×2, ×2, ×2), since 16 is two to the fourth power. For half-pounds, remember 0.5 lb is 8 oz and a quarter-pound is 4 oz — the values behind a "quarter-pounder" burger.
The most common slip-up is confusing the weight ounce used here with the fluid ounce used for liquid volume; they are different measurements and a pound of one ingredient will not occupy 16 fluid ounces. Another caveat: jewelers and precious-metal dealers use the troy ounce, of which there are only about 14.58 in a pound, so this 16-ounce rule applies to ordinary weight, not gold or silver.
Frequently asked questions
How do you convert pound to ounce?
Multiply the number of pounds by 16 to get ounces. For example, 1 lb = 16 oz.
What is 1 pound in ounces?
1 pound equals 16 ounces (1 lb = 16 oz).
How many pounds are in 1 ounce?
There are 0.0625 pounds in 1 ounce.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many ounces are in 2 pounds?
There are 32 ounces in 2 pounds, since you multiply 2 by 16 (2 × 16 = 32 oz).
How do I convert pounds and ounces together, like 3 lb 4 oz, into total ounces?
Multiply the whole pounds by 16 and add the leftover ounces. For 3 lb 4 oz that is (3 × 16) + 4 = 52 ounces.
How many ounces is a quarter pound?
A quarter pound is 4 ounces, because 0.25 × 16 = 4 oz. That is the weight behind a 'quarter-pounder' burger patty.
Is a weight ounce the same as a fluid ounce?
No. A weight (avoirdupois) ounce measures mass, while a fluid ounce measures liquid volume. A pound equals 16 weight ounces, but it does not equal 16 fluid ounces of an ingredient.
How many ounces are in half a pound?
Half a pound is 8 ounces, since 0.5 × 16 = 8 oz.
Why are there 16 ounces in a pound instead of 10?
The avoirdupois pound comes from the imperial system, which divides units by 16 rather than by 10 like the metric system. This older base made halving easy: a pound splits cleanly into 8, 4, and 2 ounces.
How do I convert ounces back to pounds?
Divide the number of ounces by 16. For example, 40 oz ÷ 16 = 2.5 pounds, and each single ounce equals 0.0625 lb.
Does the 16-ounce rule apply to gold and silver?
No. Precious metals use the troy ounce, and there are only about 14.58 troy ounces in a pound. The 16-ounce rule is for ordinary avoirdupois weight.
Is 8 oz the same as 1 lb?
No, 8 oz is exactly half a pound, because a pound holds 16 oz and 8 ÷ 16 = 0.5 lb. The mix-up usually comes from measuring cups: a US cup holds 8 fluid ounces, a volume measurement, which is not the same as 8 ounces of weight. To get a full pound you need 16 oz on a kitchen or postal scale.
Is 500 g the same as 1 lb?
No, 500 g is a bit more than a pound. One pound is 453.59 g, so 500 g is 500 ÷ 453.59237 = 1.102 lb, or 1.102 × 16 = 17.64 oz. A 500 g packet therefore contains about 1 lb 1.6 oz, so a recipe that treats 500 g and 1 lb as equal will be off by roughly 10%.
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Sources & references
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