avoirdupois pound to avoirdupois ounce
Convert avoirdupois pound (lb) to avoirdupois ounce (oz). Use an editable mass converter, conversion formula, and reference table.
1 lb = 16 oz
Conversion formula
One avoirdupois pound equals 16 avoirdupois ounce. Multiply your value in avoirdupois pound by this factor to get avoirdupois ounce. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 avoirdupois pound:5 × 16 = 80 oz
Conversion table
| avoirdupois pound (lb) | avoirdupois ounce (oz) |
|---|---|
| 0.01 | 0.16 |
| 0.1 | 1.6 |
| 1 | 16 |
| 2 | 32 |
| 5 | 80 |
| 10 | 160 |
| 25 | 400 |
| 50 | 800 |
| 100 | 1,600 |
| 1000 | 16,000 |
About these measurements
Mass quantifies an amount of matter.
The base reference used here is the gram. One avoirdupois pound is 453.59237 base units; one avoirdupois ounce is 28.34952313 base units.
Important distinctions
Mass is not force. Avoirdupois ounces and troy ounces have different masses.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert lb to oz?
Multiply the quantity in lb by 16. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the avoirdupois ounce to avoirdupois pound converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
