Multiply pounds by 16 to get ounces. Useful for recipes, fishing catches and newborn weights given in decimal pounds.
How to use the Pounds to Ounces Converter
- Type the number of pounds into the Pounds field. Decimals such as 0.5 are fine.
- Read the answer in Ounces – it updates as you type, with no button to press.
- To convert the other way, type into Ounces and the pounds are recalculated.
- Press Copy results to copy both values with the page title, or Copy link to share this exact conversion.
This page converts only lb ⇄ oz. Need a different unit? Use the general weight converter, where you can choose any “from” and “to” unit.
How it works
Both units measure weight, so they are always in the same ratio: one pound equals 16 ounces. The calculator multiplies the number of pounds you type by 16 to give ounces, and when you type into the ounces field it divides by the same factor to give pounds. Because the ratio never changes, doubling the pounds always doubles the ounces. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation).
How to convert pounds to ounces
- Write down the value in pounds, for example 1 lb.
- Multiply by the conversion factor 16 (because 1 pound = 16 oz).
- 1 × 16 = 16 oz.
- To go back from ounces to pounds, divide by 16 – or multiply by 0.0625.
lb to oz conversion table
| Pounds | Ounces | Ounces | Pounds |
|---|---|---|---|
| 0.25 lb | 4 oz | 1 oz | 0.0625 lb |
| 0.5 lb | 8 oz | 2 oz | 0.125 lb |
| 0.75 lb | 12 oz | 5 oz | 0.3125 lb |
| 1 lb | 16 oz | 10 oz | 0.625 lb |
| 1.5 lb | 24 oz | 20 oz | 1.25 lb |
| 2 lb | 32 oz | 50 oz | 3.125 lb |
| 2.5 lb | 40 oz | 100 oz | 6.25 lb |
| 3 lb | 48 oz | 1,000 oz | 62.5 lb |
| 5 lb | 80 oz | ||
| 10 lb | 160 oz |
What is a pound?
The avoirdupois pound is defined as exactly 0.45359237 kg and is divided into 16 ounces. It is the everyday weight unit in the U.S. and is still widely used in the UK for body weight and food.
What is an ounce?
The avoirdupois ounce is 1/16 of a pound, exactly 28.349523125 g. It is used for food, postage and parcels. Do not confuse it with the fluid ounce (volume) or the troy ounce (precious metals).
Common mistakes to avoid
Confusing fluid ounces (volume) with ounces (weight), using troy ounces for food or regular ounces for gold, and mixing u.s. short tons, uk long tons and metric tonnes.
Formula
1 lb = 16 oz1 oz = 0.0625 lboz = lb × 16Worked example
Inputs — Pounds: 1 lb.
Results — Ounces = 16 oz.
Frequently asked questions
How many ounces in 2.5 lb?
40 oz.
How many ounces in a pound?
16.
How do I convert pounds to ounces?
Multiply the number of pounds by 16. For example, 1 lb × 16 = 16 oz.
How do I convert ounces back to pounds?
Divide by 16 (or multiply by 0.0625), or simply type the value into the ounces field above.
What is 10 lb in ounces?
10 lb = 160 oz.
What is 5 lb in ounces?
5 lb = 80 oz.
Is this conversion exact?
Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit.
Can I convert to other units on this page?
This page converts only between pounds and ounces. To pick any weight unit, use the general weight converter linked under Related calculators.
What formula does the Pounds to Ounces Converter use?
1 lb = 16 oz.