How to Convert Stone to Ounces (st to oz)
Weight units matter at the wet market, where older stalls and Chinese medical halls still quote prices per kati or tael, and when following American recipes in ounces and pounds. This guide shows how to convert stone into ounces by hand, with examples and a quick-reference table.
The conversion
To convert stone to ounces, multiply the value by 224. To go the other way, divide by the same number (or multiply by 0.0044642857). For a quick estimate, multiply by about 220.
Ounces = stone × 224
Worked examples
- 3 st = 672 oz
- 12.5 st = 2,800 oz
- 75 st = 16,800 oz
Stone to Ounces table
| Stone | Ounces |
|---|---|
| 1 st | 224 oz |
| 2 st | 448 oz |
| 5 st | 1,120 oz |
| 10 st | 2,240 oz |
| 20 st | 4,480 oz |
| 25 st | 5,600 oz |
| 50 st | 11,200 oz |
| 100 st | 22,400 oz |
| 250 st | 56,000 oz |
| 500 st | 112,000 oz |
| 1,000 st | 224,000 oz |
Common questions
Is st to oz exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Ounces to Stone converter.
Mistakes to avoid
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Background
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
For any value, use the Stone to Ounces Converter or browse all weight converters.
Run your own numbers: Stone to Ounces Converter