Pounds to Stone Converter
Convert pounds to stone instantly. One pound equals exactly 0.07142857 stone. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert pounds to stone
Worked example: convert 250 pounds to stone. Using stone ← pounds ÷ 14, we get 250 × 0.07142857143 = 17.857143 st. To check the result, convert back: 17.857143 st ÷ 0.07142857143 = 250 lb.
Pounds to stone chart
| Pounds (lb) | Stone (st) |
|---|---|
| 1 lb | 0.07142857 st |
| 2 lb | 0.1428571 st |
| 3 lb | 0.2142857 st |
| 4 lb | 0.2857143 st |
| 5 lb | 0.3571429 st |
| 6 lb | 0.4285714 st |
| 8 lb | 0.5714286 st |
| 10 lb | 0.7142857 st |
| 12 lb | 0.8571429 st |
| 15 lb | 1.071429 st |
| 20 lb | 1.428571 st |
| 25 lb | 1.785714 st |
| 30 lb | 2.142857 st |
| 40 lb | 2.857143 st |
| 50 lb | 3.571429 st |
| 75 lb | 5.357143 st |
| 100 lb | 7.142857 st |
| 150 lb | 10.71429 st |
| 200 lb | 14.28571 st |
| 250 lb | 17.85714 st |
| 500 lb | 35.71429 st |
| 1,000 lb | 71.42857 st |
Stone to pounds (reverse)
| Stone (st) | Pounds (lb) |
|---|---|
| 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 |
| 250 st | 3,500 lb |
| 500 st | 7,000 lb |
| 1,000 st | 14,000 lb |
About the pound and the stone
The avoirdupois pound divides into 16 ounces. It is the everyday unit for body weight and groceries in the United States and is still common in the United Kingdom.
A stone is 14 pounds, or about 6.35 kilograms. It is used almost only in the UK and Ireland, mainly for body weight: someone who weighs 11 stone 7 pounds weighs 161 pounds.
One stone equals 14 pounds, which makes the stone the heavier unit of the two.
Everyday sizes in pounds and stone
| Everyday example (approximate) | In pounds | In stone |
|---|---|---|
| A liter of water | 2.2046 lb | 0.15747 st |
| A newborn baby | 7.4957 lb | 0.53541 st |
| A bowling ball (maximum) | 16.006 lb | 1.1433 st |
| An average adult | 165.35 lb | 11.81 st |
| A grand piano | 661.39 lb | 47.242 st |
| A small car | 2,645.5 lb | 188.97 st |
Pounds to stone FAQ
How many stone are in one pound?
One pound equals exactly 0.07142857143 stone. In the other direction, one stone equals 14 pounds.
How do I convert pounds to stone without a calculator?
convert 250 pounds to stone. Using stone ← pounds ÷ 14, we get 250 × 0.07142857143 = 17.857143 st. To check the result, convert back: 17.857143 st ÷ 0.07142857143 = 250 lb. For a quick estimate, round the factor to 0.071. Then 250 lb is about 17.75 st, compared with the exact 17.8571 st (an error of 0.6%). That is close enough for planning, but use the calculator above when the number matters.
What is a bowling ball (maximum) in stone?
A bowling ball (maximum) is about 16.006 pounds, which is 1.1433 stone. Treat that as an approximate everyday figure rather than an official measurement.
Are the pounds and stone the same in every country?
Since 1959 the pound is exactly 0.45359237 kg in the US, UK and Commonwealth. The stone is exactly 14 pounds (6.35029318 kg). It is not used in the United States.