Seldons
pounds to stone
1 pound = 0.0714286 stone.
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How do you convert pounds to stone?
Use this formula. It is exact — these units are defined by international agreement, not measured.
st = lb ÷ 14
Example: 10 lb × 0.0714285714 = 0.714286 st.
pounds to stone conversion table
Common values, rounded to six significant figures.
| lb | st |
|---|---|
| 1 lb | 0.0714286 st |
| 2 lb | 0.142857 st |
| 5 lb | 0.357143 st |
| 10 lb | 0.714286 st |
| 20 lb | 1.42857 st |
| 25 lb | 1.78571 st |
| 50 lb | 3.57143 st |
| 100 lb | 7.14286 st |
| 120 lb | 8.57143 st |
| 140 lb | 10 st |
| 150 lb | 10.7143 st |
| 160 lb | 11.4286 st |
| 170 lb | 12.1429 st |
| 180 lb | 12.8571 st |
| 200 lb | 14.2857 st |
| 220 lb | 15.7143 st |
| 250 lb | 17.8571 st |
A weight in pounds becomes stones and pounds the moment it is read in the UK or Ireland — gyms, clinics and scales there all display it that way. Divide by 14 and keep the remainder: 158 lb is 11 stone 4, not 11.29 stone, because nobody writes the fractional part as a decimal.
Values worth remembering
These come up often enough that knowing them saves a lookup.
- 50 lb = 3.57143 sta checked bag limit
- 150 lb = 10.7143 stan average adult
- 14 lb = 1 stone stone
Questions people ask
How many stone is 1 pound?
1 pound is 0.0714286 stone.
How many pounds is 1 stone?
1 stone is 14 pounds.
How do you convert pounds to stone in your head?
Use × 0.07. That lands within a percent or so of the exact figure, which is close enough for packing, shipping estimates and shopping — use the calculator when the number has to be right.
Is the pound to stone conversion exact?
Yes. The relationship is exact by international agreement, so 0.0714285714 is a definition rather than a measurement. Rounding in the answer comes from display, not from the conversion.