Quick Answer: Pounds to Ounces
One pound equals 16 ounces (1 lb = 16 oz).
Conversely, 1 oz = 0.0625 lb.
Formula: oz = lb × 16
Worked examples
- 0.25 lb = 4 oz
- 0.5 lb = 8 oz
- 1 lb = 16 oz
Method and limitations
To convert pounds to ounces, multiply the pound value by 16. There are exactly 16 ounces in one pound. Calculations use full-precision constants; displayed values are rounded to at most 9 significant figures. Results are rounded for display only. Full precision is kept internally, so long chains of conversions do not accumulate rounding error. Where US customary and imperial units share a name (for example fluid ounces and gallons), this page uses the US customary definition and says so explicitly.
Each factor is exact by definition, derived from exact definitions, or a documented conventional value — see the methodology and sources.
Conversion Formula
To convert pounds to ounces, multiply the pound value by 16. There are exactly 16 ounces in one pound.
Step-by-Step Conversion Guide
Follow these steps to convert pounds to ounces manually:
Start with your value in pounds
Example: You want to convert 1 lb
Apply the conversion formula
Use the formula: oz = lb × 16
Calculate the result
1 lb = 16 oz
Verify your answer
Use our calculator above to double-check your manual calculation.
Quick Mental Math Tip
To convert pounds to ounces, multiply the pound value by 16. There are exactly 16 ounces in one pound.
Common Conversions
| Pounds (lb) | Ounces (oz) | Ounces → Pounds |
|---|---|---|
| 0.25 lb | 4 | 0.25 oz = 0.015625 lb |
| 0.5 lb | 8 | 0.5 oz = 0.03125 lb |
| 1 lb | 16 | 1 oz = 0.0625 lb |
| 2 lb | 32 | 2 oz = 0.125 lb |
| 3 lb | 48 | 3 oz = 0.1875 lb |
| 5 lb | 80 | 5 oz = 0.3125 lb |
| 10 lb | 160 | 10 oz = 0.625 lb |
| 20 lb | 320 | 20 oz = 1.25 lb |
| 50 lb | 800 | 50 oz = 3.125 lb |
| 100 lb | 1,600 | 100 oz = 6.25 lb |
Did You Know?
Weight conversions between lb and oz are essential in international trade, where different countries use different measurement systems.
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Frequently Asked Questions
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Conversion factors on this page are either exact by definition, derived from exact definitions, or conventional values in documented use. Each is listed with its source in our conversion methodology and sources, which cites the BIPM SI Brochure, NIST Special Publication 811 and the relevant IEC or national standards. Results are rounded for display only; calculations use full precision.