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Exact relationship and formula
1 international avoirdupois pound = 16 international avoirdupois ounces exactly. Pounds = ounces ÷ 16.
Reverse mode applies the inverse relationship from the same definition.
Worked example
8 oz = 0.5 lb; 16 oz = 1 lb; 24 oz = 1.5 lb.
This is a mass conversion, not a fluid-volume conversion. Fluid ounces cannot be converted to pounds without substance density.
Common avoirdupois ounces reference values
| Avoirdupois ounces | Conversion |
|---|---|
| 1 oz avdp | 0.0625 lb avdp |
| 4 oz avdp | 0.25 lb avdp |
| 8 oz avdp | 0.5 lb avdp |
| 12 oz avdp | 0.75 lb avdp |
| 16 oz avdp | 1 lb avdp |
| 24 oz avdp | 1.5 lb avdp |
| 32 oz avdp | 2 lb avdp |
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