One pound (symbol: lb), the international avoirdupois pound, is legally defined as exactly 0.45359237 kilograms.
One ounce (symbol: oz) equals to one sixteenth of a pound avoirdupois. The avoirdupois ounce equal to approximately 28.3 grams and the troy ounce of about 31.1 grams. The ounce is a unit of weight used in most British derived customary systems of measurement.
The stone (symbol: st) is a unit of measure equal to 14 pounds (lb) avoirdupois, or 6.3503 kilograms (kg). This unit of measurement is used in Australia, Great Britain, and Ireland for measuring human body weight.
- How many stones are in 21 pounds and 9 ounces?
- 21 pounds and 9 ounces is equal to how many stones?
- How to convert 21 pounds and 9 ounces to stones?
- What is 21 pounds and 9 ounces in stones?
- How many is 21 pounds and 9 ounces in stones?
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