Convert Pounds to Stones
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Converting Pounds to Stones
Converting pounds to stones is commonly used in the United Kingdom and Ireland for expressing human body weight in a more manageable scale.
Mathematical Relationship
The mathematical relation between pounds and stones is: 1 stone = 14 pounds. To convert a mass in pounds to stones, divide the pound value by 14.
Common Conversion Values
| Pounds | Stones |
|---|---|
| 14 | 1 |
| 70 | 5 |
| 140 | 10 |
| 168 | 12 |
| 280 | 20 |
Unit Definitions
Pounds
The pound (symbol: lb) is a unit of mass in the imperial and US customary systems of measurement. The international avoirdupois pound is defined as exactly 0.45359237 kilograms.
Stones
The stone (symbol: st) is a unit of mass in the imperial system equal to 14 pounds. It is primarily used in the United Kingdom and Ireland for measuring human body weight.
Historical Context
The stone has been used as a weight measure in Britain since the Middle Ages, though its exact value varied by commodity and region until it was standardized at 14 pounds in the early 19th century.