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Pounds to Stone Converter
This pounds to stone converter turns pounds into stone and back again, and it also handles kilograms and grams, so one tool covers every weight unit you are likely to meet. Enter a weight, pick the units, and the result appears at once — with the stone-and-pounds breakdown that people actually use when they talk about body weight, such as 11 stone 7 pounds instead of a bare decimal.
1 stone = 14 pounds = 6.35029 kg. The stone-and-pounds line shows whole stone plus the leftover pounds.
How it works
The stone is an old imperial unit of weight, and it is still the everyday unit for body weight in the UK and Ireland. One stone is defined as exactly 14 pounds, and one pound is 0.45359237 kilograms, so one stone works out to 6.35029 kilograms. Because the stone is a fixed multiple of the pound, converting between the two is a single division or multiplication — no tables and no guesswork.
To convert pounds to stone, divide the pounds by 14. A weight of 154 pounds gives 154 ÷ 14 = 11 stone exactly. Most weights do not divide evenly, so the converter also shows the stone-and-pounds form: divide by 14, keep the whole number as the stone, and the remainder is the leftover pounds. For 161 pounds, 161 ÷ 14 = 11 with 7 left over, so the answer is 11 stone 7 pounds. To convert the other way, multiply stone by 14: 10 stone is 10 × 14 = 140 pounds.
Kilograms and grams fit into the same system through the pound. One kilogram is 2.20462 pounds, and one stone is 6.35029 kilograms, so converting stone to kilograms is a multiplication by 6.35029 and converting kilograms to stone is a division by the same number. Grams are simply kilograms multiplied by 1,000. The converter runs every conversion through kilograms as the common base, which keeps all four units consistent: convert any weight to any other and the numbers always agree, whichever direction you go.
The stone is almost never used for anything except body weight these days. Parcels, luggage, food, and gym weights are usually given in pounds or kilograms, and the stone survives mainly because people are used to saying their weight in stone and pounds. That is why the stone-and-pounds breakdown matters: a decimal like 11.5 stone is correct but nobody says it — they say 11 stone 7 pounds, because half a stone is 7 pounds.
Worked example
A person steps on a scale that reads in pounds and sees 154 lb. They want to know their weight in stone, because that is how their friends talk about weight. Here is how the converter works it out.
Step 1: Type 154 into the amount box.
Step 2: Leave the From unit on Pounds (lb) and set the To unit to Stone (st).
Step 3: Divide 154 by 14, which gives exactly 11.
Step 4: Read the breakdown: 11 stone, 0 leftover pounds, which is also 69.85 kg and 69,853 g.
The tool gives exactly this result: 11 stone — 154 lb = 11 st exactly. Try a second weight: enter 10 in the amount, switch From to Stone (st) and To to Pounds (lb), and the tool gives 140 lb — 10 st = 140 lb, which is 63.5029 kg.
FAQ
How many pounds are in a stone?
There are exactly 14 pounds in one stone. So to convert pounds to stone, divide the pounds by 14. A weight of 154 pounds is exactly 11 stone, because 154 ÷ 14 = 11. A weight of 161 pounds is 11 stone 7 pounds, because 161 ÷ 14 = 11 with 7 left over.
How do I convert stone to kilograms?
One stone is 6.35029 kilograms. Multiply the number of stone by 6.35029 to get kilograms. For example, 10 stone is 10 × 6.35029 = 63.5029 kilograms, or about 63.5 kg. To go the other way, divide kilograms by 6.35029.
What does 11 stone 7 pounds mean?
It means 11 whole stone plus 7 extra pounds. Because one stone is 14 pounds, 11 stone is 154 pounds, and adding the extra 7 pounds gives 161 pounds in total. Body weight is often written this way, with the whole stone first and the leftover pounds after it.
Is a stone the same as 14 pounds everywhere?
Yes, in the imperial system a stone is always 14 pounds, which is 6.35029 kilograms. It is still used for body weight in the UK and Ireland, while most other places weigh people in kilograms or in pounds alone. The stone is rarely used for anything other than body weight these days.
How do I convert pounds to stone in my head?
Divide by 14. A quick way is to divide by 7 and then halve the answer, because 14 is 7 × 2. For 168 pounds: 168 ÷ 7 = 24, and half of 24 is 12, so 168 pounds is exactly 12 stone. If there is a remainder, it is the leftover pounds — 175 pounds is 12 stone 7 pounds.