Convert weight and mass units — kilograms, pounds, ounces, grams, tons, stones.
| Unit | Name | Value |
|---|---|---|
| kg | Kilogram | 6.35029 |
| g | Gram | 6350.29 |
| mg | Milligram | 6350290 |
| t | Metric Ton | 0.00635029 |
| lb | Pound | 14.000004 |
| oz | Ounce | 224.00007 |
The Stone (st) and the Ounce (oz) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 st = 224.0001 oz
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Stone (st) | Ounce (oz) | Real-world context |
|---|---|---|
| 0.1 st | 22.4000071 oz | |
| 1 st | 224.0001 oz | |
| 5 st | 1120.0004 oz | |
| 10 st | 2240.0007 oz | |
| 100 st | 22400.0071 oz |
1 stone (st) equals exactly 224.0001 ounces (oz). Use the formula: st × 224.0001 = oz.
To convert stone to ounces, multiply your value in stone by 224.0001. For example, 5 st × 224.0001 = 1120.0004 oz.
100 stone = 22400.0071 ounces. Calculation: 100 × 224.0001 = 22400.0071.
To convert ounces back to stone, divide by 224.0001 (or multiply by 0.00446428). Example: 10 oz ÷ 224.0001 = 0.04464284 st.
Yes. This converter uses the internationally recognised exact conversion factor: 1 st = 224.0001 oz. All calculations are performed in your browser with no rounding until display.
10 stone = 2240.0007 ounces. Simply multiply by 224.0001.
Converting stone to ounces is commonly needed for everyday tasks like cooking recipes, body weight tracking, shopping internationally, or shipping parcels where one system uses st and another uses oz.
The stone (st) is a British imperial unit of mass equal to exactly 14 avoirdupois pounds or 6.35029318 kilograms. Used almost exclusively in the United Kingdom and Ireland for human body weight, it has no role in scientific, commercial, or international contexts. The stone is not an SI unit and was removed from official UK trade measurement in 1985, though it remains deeply embedded in everyday British culture.
The avoirdupois ounce (oz) equals exactly 28.349523125 grams or 1/16 of an avoirdupois pound. It is widely used in the US and UK for food portions, product packaging, and everyday measurements. Note that the troy ounce (31.1035 g), used for precious metals like gold and silver, is a different and heavier unit than the avoirdupois ounce.
One of the oldest English weight units, the stone was referenced as early as the 13th century. Historically its value varied by commodity (8 lb for meat, 12 lb for hemp, 14 lb for wool, 16 lb for glass). King Edward III standardised the wool stone at 14 pounds in 1350, which became the universal English standard. The Weights and Measures Act 1835 formally defined the stone as 14 lb. EU harmonisation abolished the stone for trade in 1985.
Interesting fact: The world record heaviest person weighed 635 kg — exactly 100 stone, illustrating how the stone unit provides digestible reference points for large body weights. British people typically express their weight as, for example, "11 stone 4 pounds."
The word "ounce" derives from Latin uncia (a twelfth), originally 1/12 of the Roman pound. The avoirdupois ounce developed in medieval England specifically for the wool trade, creating a 16-ounce pound distinct from the Troy 12-ounce pound. The British Imperial system codified the ounce in 1824. The modern exact definition (28.349523125 g) was set by the 1959 International Yard and Pound Agreement.
Interesting fact: A troy ounce (31.1 g) used for gold is heavier than an avoirdupois ounce (28.35 g) used for food — so an "ounce" of gold contains more metal than an "ounce" of flour. A standard large hen's egg weighs approximately 56–63 grams (about 2 oz).