Pounds to ounces (lb to oz)
Convert pounds to ounces. For mass, 1 lb equals 16 oz.
Converter
lb to oz conversion table
| Pounds | Ounces |
|---|---|
| 1 lb | 16 oz |
| 2 lb | 32 oz |
| 5 lb | 80 oz |
| 10 lb | 160 oz |
| 25 lb | 400 oz |
| 50 lb | 800 oz |
| 100 lb | 1600 oz |
| 1000 lb | 16000 oz |
Formula
oz = lb × 16
Worked example
25 lb × 16 = 400 oz
Popular conversion examples
Choose an example to open this converter with the value filled in. These are useful examples, not a claim about search rankings.
- 1 lb to oz = 16 oz
- 5 lb to oz = 80 oz
- 100 lb to oz = 1600 oz
- 4 lb to oz = 64 oz
- 16 oz to lb = 1 lb
- 1 oz to lb = 0.0625 lb
About pounds and ounces
Pound (lb)
The avoirdupois pound is defined as exactly 0.45359237 kilograms. It is used for body weight, groceries and shipping in the US and UK.
Ounce (oz)
The avoirdupois ounce is exactly 1/16 of a pound (28.349523125 grams). It is used for food, postage and small goods in the US and UK. It measures mass, not fluid volume.
Both are units of mass; the base unit used internally is kg.
Notes
- Ounces and pounds are avoirdupois units of mass (1 lb = 0.45359237 kg exactly).
- The stone is the British unit of 14 avoirdupois pounds (6.35029318 kg). The troy ounce (31.1034768 g, used for precious metals) is a different unit from the avoirdupois ounce, and the grain is exactly 1/7000 of a pound (64.79891 mg).
- Mass cannot be negative.
lb to oz FAQs
How do I convert pounds to ounces?
Multiply the number of pounds by 16 to get ounces. For example, 25 lb × 16 = 400 oz.
How many ounces are in one pound?
1 lb = 16 oz and 1 oz = 0.0625 lb. To go the other way, use the ounces to pounds converter.
How many ounces are in 2 pounds?
2 lb = 32 oz, rounded to 6 significant digits. Change the value in the converter above for any other amount.
How many ounces are in 5 pounds?
5 lb = 80 oz, rounded to 6 significant digits.
What is the formula for pounds to ounces?
oz = lb × 16, where lb is the number of pounds and oz is the result in ounces. The reverse is lb = oz × 0.0625.
Is the lb to oz conversion exact?
Yes. The factor 16 follows directly from the unit definitions (The avoirdupois pound is defined as exactly 0.45359237 kilograms; the avoirdupois ounce is exactly 1/16 of a pound (28.349523125 grams)), so the only rounding is in the digits you choose to display.
What is the difference between pounds and ounces?
The avoirdupois pound is defined as exactly 0.45359237 kilograms. It is used for body weight, groceries and shipping in the US and UK. The avoirdupois ounce is exactly 1/16 of a pound (28.349523125 grams). It is used for food, postage and small goods in the US and UK. It measures mass, not fluid volume.
Does this convert weight or mass?
Strictly it converts mass. The pound, ounce and stone here are units of mass, which is what scales and everyday “weight” refer to on Earth. Pound-force and other units of force are different and are not handled by this converter.
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