How Many Stones in a Pound?
0.07143 st
1 pound equals 0.07143 stone; it takes 14 pounds to make 1 stone.
Exact: 1 st = 14 lb
Pounds to Stones conversion chart
| Pounds | Stones |
|---|---|
| 0.25 lb | 0.01786 |
| 0.5 lb | 0.03571 |
| 0.75 lb | 0.05357 |
| 1 lb | 0.07143 |
| 1.5 lb | 0.1071 |
| 2 lb | 0.1429 |
| 3 lb | 0.2143 |
| 4 lb | 0.2857 |
| 5 lb | 0.3571 |
| 10 lb | 0.7143 |
| 15 lb | 1.071 |
| 20 lb | 1.429 |
| 25 lb | 1.786 |
| 30 lb | 2.143 |
| 40 lb | 2.857 |
| 50 lb | 3.571 |
| 60 lb | 4.286 |
| 75 lb | 5.357 |
| 100 lb | 7.143 |
| 120 lb | 8.571 |
| 130 lb | 9.286 |
| 150 lb | 10.71 |
| 160 lb | 11.43 |
| 180 lb | 12.86 |
| 200 lb | 14.29 |
| 220 lb | 15.71 |
| 250 lb | 17.86 |
How to convert pounds to stones
stone = pounds ÷ 14
Example: 5 lb ÷ 14 = 0.3571 st.
Divide the pounds by 14. A calculator gives the result as a decimal, so 172 lb becomes 12.29 st.
To write that as stones and pounds, keep the whole number as stones, turn it back into pounds and subtract. Here 12 stone is 168 lb, and 172 lb minus 168 lb leaves 4 lb, so the weight is 12 st 4 lb.
The decimal part is a share of a stone, not a count of pounds. That is why the subtraction step matters: skip it and the loose pounds come out wrong.
Giving one weight in stones, pounds and kilograms
Convert each unit from the original pounds figure, not from a rounded result. 172 lb is 78.02 kg, but if you start from the rounded 12.29 st you get 78.05 kg.
The gap is small here, yet it grows on heavier weights and after each extra step. Keep the full pounds value until the end, and use pounds to kilograms for the metric figure.
Checking your answer with whole stones
Whole stones land on multiples of 14, so a few landmarks catch most slips. 5 stone is 70 lb, 10 stone is 140 lb, 15 stone is 210 lb and 20 stone is 280 lb.
Find the two landmarks your weight sits between. 172 lb lies between 140 lb and 210 lb, so the answer must fall between 10 stone and 15 stone. An answer outside that range means a slip on the calculator.
Pounds and stones: questions
How many stone is 150 pounds?
150 lb is 10.71 stone as a decimal, which you would write as 10 st 10 lb. The 10 stone account for 140 pounds, and the rest is loose pounds.
How many stone is 100 pounds?
100 lb is 7 st 2 lb, or 7.143 stone as a decimal. Seven stone take up 98 pounds, leaving 2 pounds over.
What is 7 pounds in stones?
Exactly half a stone: 7 lb is 0.5 stone. Double it and 14 lb makes a whole stone, while 21 lb is 1.5 stone. A quarter stone is less tidy at 3.5 pounds.
How many stone is 250 pounds?
250 lb is 17 st 12 lb. The calculator shows 17.86 stone, the 17 stone account for 238 pounds, and the remaining 12 pounds are the loose pounds. It is also 113.4 kg if you need a metric figure.
Is a stone the same weight in the US and UK?
Yes. The stone is a British unit, but it is built from the same avoirdupois pound that the US uses, as the notes on British units in NIST Handbook 44 show. So 1 st is 6.35029318 kg on both sides of the Atlantic.
Related conversions
Sources: Unit definitions: NIST Handbook 44 · Last reviewed · Report an error
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