Unit converter
Stone to Pounds Converter
Convert stone to pounds with the exact factor 14. In this calculator one stone is 6350.29318 g and one pound is 453.59237 g, so 6350.29318 / 453.59237 gives 14 pounds per stone. Stone is still a familiar UK body-weight unit, especially for bathroom scales, health targets, sport discussions, and older medical notes. Converting to pounds helps when a fitness app, US form, luggage note, or gym programme expects pounds rather than UK stone notation.
1 stone = 14 pounds
Common stone to pounds values
| Stone | Pounds |
|---|---|
| 1 st | 14 lb |
| 2 st | 28 lb |
| 5 st | 70 lb |
| 10 st | 140 lb |
| 20 st | 280 lb |
| 50 st | 700 lb |
| 100 st | 1,400 lb |
How to convert
- Start with the number of stone, including any decimal part if the scale gives one.
- Multiply by the exact factor 14, because one stone is exactly 14 pounds.
- The result is the total weight in pounds.
- To convert pounds back to stone, divide the pound value by 14.
- For a mental estimate, multiply by 10 and add four more lots of the stone value: 11 st is 110 + 44 = 154 lb.
pounds = stone * 14
The stone is defined in this mass table as 6350.29318 grams. The pound is 453.59237 grams. Dividing those base factors gives exactly 14, so multiplying stone by 14 gives pounds.
- st
- the weight in stone you start with
- 14
- pounds in one stone
Worked example
A body weight of 11.5 st is 11.5 multiplied by 14, which equals 161 lb. Written in traditional stone-and-pounds style, that is the same as 11 st 7 lb.
Key facts
- One stone is exactly 14 lb.
- Ten stone is exactly 140 lb.
- A half stone is 7 lb.
- The stone is mostly a UK and Ireland body-weight convention rather than a packaging or postage unit.
Tips
- For body-weight notes, keep stone-and-pounds form if the audience expects it, and use total pounds for US apps.
- If your scale shows 0.1 st steps, remember that each step is 1.4 lb.
- For gym targets, convert the body-weight target once and avoid re-rounding every session note.
Frequently asked questions
How many pounds are in 1 stone?+
One stone is exactly 14 pounds.
How many stone is 1 pound?+
One pound is 1 / 14 stone, about 0.07142857142857142 st.
Why is stone used for body weight in the UK?+
Stone remains common in everyday UK body-weight talk, even though official medical and product measurements often use kilograms.
How do I convert stone and pounds together?+
Multiply the stone part by 14, then add the extra pounds. For example, 10 st 6 lb is 10 * 14 + 6 = 146 lb.
Things to watch
- Rounding decimal stone to the nearest whole stone can hide up to 7 lb.
- Pounds use the same avoirdupois definition in US and imperial usage, but stone is not normally used in US forms.
Sources
- NIST Handbook 44, Appendix C: General Tables of Units of Measurement · NIST
- International yard and pound agreement (1959) · NIST
- Weights and Measures Act 1985 · UK legislation.gov.uk
Last updated: 2026-01-01
Conversions use internationally defined factors. Provided for general use; verify critical measurements independently.