The short answer: 16 ounces
One avoirdupois pound is 16 avoirdupois ounces, exactly 453.59237 grams. So one ounce is 28.3495 grams, and the chain runs: 1 stone = 14 pounds = 224 ounces.
Quick reference
| Pounds | Ounces | Grams |
|---|---|---|
| ¼ lb | 4 oz | 113.398 g |
| ½ lb | 8 oz | 226.796 g |
| 1 lb | 16 oz | 453.592 g |
| 2 lb | 32 oz | 907.185 g |
| 5 lb | 80 oz | 2,267.962 g |
| 10 lb | 160 oz | 4,535.924 g |
The troy exception
Precious metals use troy weight: a troy pound has only 12 troy ounces, but each troy ounce (31.1035 g) is heavier than an avoirdupois ounce (28.3495 g). A troy pound is 373.2417 g — lighter than an avoirdupois pound despite the heavier ounce. If you're weighing gold or silver, make sure which ounce the price assumes.
Worked example
A recipe calls for 6 ounces of cheese. That's 6 ÷ 16 = 0.375 lb, or 6 × 28.3495 = 170.097 g on a kitchen scale. The ounces to pounds converter and ounces to grams converter do any figure instantly.
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