Formula
1 st = 14 lb
stone = pounds ÷ 14
How to convert
- Divide the total pounds by 14 for decimal stone.
- Use the whole-number quotient as the stone value.
- Keep the division remainder as pounds for the mixed format.
Stone is still commonly used for personal body weight in the United Kingdom and Ireland, although kilograms are used in many formal settings. One stone contains exactly 14 pounds.
A decimal result such as 10.714 st and a mixed result such as 10 st 10 lb describe the same weight in different notation.
Practical examples
70 lb ÷ 14 = 5 st150 lb ÷ 14 = 10.7142857 st = 10 st 10 lb196 lb ÷ 14 = 14 st
Conversion table
| Pounds (lb) | Decimal stone (st) | Stone and pounds |
|---|---|---|
| 7 | 0.5 | 0 st 7 lb |
| 14 | 1 | 1 st 0 lb |
| 50 | 3.571429 | 3 st 8 lb |
| 70 | 5 | 5 st 0 lb |
| 100 | 7.142857 | 7 st 2 lb |
| 140 | 10 | 10 st 0 lb |
| 150 | 10.714286 | 10 st 10 lb |
| 200 | 14.285714 | 14 st 4 lb |
Questions people ask
How many pounds are in one stone?
There are exactly 14 pounds in one stone.
What is 150 lb in stone?
150 lb is about 10.7143 st, or 10 st 10 lb.
Why show two stone formats?
Decimal stone works well in calculations, while stone and pounds is more natural in everyday conversation.