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Convert pounds (lb) to ounces (oz) instantly. Full chart, formula, and reverse direction.
A pound (lb) equals exactly 16 ounces (oz) in the avoirdupois system. To convert lb to oz, multiply by 16; to convert oz to lb, divide by 16.
1 lb equals 16.000 oz.
| Pounds (lb) | Ounces (oz) |
|---|---|
| 0.25 lb | 4.000 oz |
| 0.5 lb | 8.000 oz |
| 0.75 lb | 12.000 oz |
| 1 lb | 16.000 oz |
| 1.5 lb | 24.000 oz |
| 2 lb | 32.000 oz |
| 2.5 lb | 40.000 oz |
| 3 lb | 48.000 oz |
| 4 lb | 64.000 oz |
| 5 lb | 80.000 oz |
| 6 lb | 96.000 oz |
| 7 lb | 112.00 oz |
| 8 lb | 128.00 oz |
| 10 lb | 160.00 oz |
| 12 lb | 192.00 oz |
| 15 lb | 240.00 oz |
| 20 lb | 320.00 oz |
| 25 lb | 400.00 oz |
| 30 lb | 480.00 oz |
| 50 lb | 800.00 oz |
| 100 lb | 1600.00 oz |
Chart values use the exact relationship 1 lb = 16 oz.
Formula
oz = lb × 16 | lb = oz ÷ 16lb = pound (avoirdupois) — US/UK customary weight (1 lb = 16 oz)
oz = avoirdupois ounce — US/UK customary weight (1 oz = 1/16 lb = 28.3495 g)
Worked Example
Convert 2.5 lb to ounces
Did you know? There used to be many different 'pound' standards in Europe — the merchant pound, the tower pound, the troy pound. The avoirdupois pound (16 oz, ~454 g) became the dominant trade standard in England by the 14th century and was carried to the American colonies.
Sources
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