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Stone to Pounds Converter

Convert stone to pounds instantly, with a reference table for translating UK body weights into American terms.

Stone to LBS Converter

1 st = 14 lb

Multiply stone by 14 to get pounds.

The link carries the values you entered, so whoever opens it sees the same result. Nothing is stored on our side — the numbers travel in the link itself.

Stone to pounds reference table

The conversions people look up most often, rounded to 2 decimal places.

Common stone to pounds conversions
Stone (st)Pound (lb)
7 st98 lb
8 st112 lb
9 st126 lb
10 st140 lb
11 st154 lb
12 st168 lb
13 st182 lb
14 st196 lb
15 st210 lb
16 st224 lb
17 st238 lb
18 st252 lb
20 st280 lb

The stone people look up most

10 st = 140 lb
A common UK bodyweight, and the figure an American would recognise instead.
11 st = 154 lb
Almost exactly 70 kg as well, so this is the one weight where all three systems land somewhere tidy at once.
14 st = 196 lb
Note that 14 stone is not 14 pounds - the two units share nothing but the number.
18 st = 252 lb
Mixed notation like "18 st 4 lb" means 18 x 14 + 4, not 18.4 stone.
21 st = 294 lb
Three stone short of the 24 st that many bathroom scales stop at.

How the stone to lbs calculation works

A stone is exactly 14 pounds:

pounds = stone × 14

Both units are imperial, so this conversion is a whole number with no rounding anywhere in it. It exists because the two halves of the English-speaking world diverged: Britain kept the stone for body weight, and America dropped it entirely and counts in pounds alone.

That is the practical use. An American will not know what 12 stone means. Give them 168 lb.

  • 8 st → 112 lb
  • 10 st → 140 lb
  • 12 st → 168 lb
  • 14 st → 196 lb
  • 16 st → 224 lb

Handling the mixed notation. UK weights are usually written as stone-and-pounds — "11 st 6 lb" — rather than as a decimal. To get total pounds, multiply the stone by 14 and add the loose pounds: 11 × 14 + 6 = 160 lb.

Going the other way, divide the pounds by 14. The whole number is the stone, and the remainder is the pounds: 160 ÷ 14 = 11 remainder 6, so 11 st 6 lb. Note that 11.43 stone is the decimal form of the same weight — the .43 is 43% of a stone, which is those 6 pounds.

One historical note worth knowing: the stone was not always 14 pounds. It varied by trade and by commodity — wool, meat and cheese each had their own — until it was standardised in the nineteenth century. The 14 lb figure is the one that survived.

Frequently asked questions

Why do British scales use stone when gym equipment uses kilograms?

The two come from different supply chains. Bathroom scales are sold to households that think in stone, while bars, plates and medical scales are made to one international standard in kilograms. A 20 kg plate is 3 st 2 lb, which is why no gym has ever labelled one in stone. Anyone tracking bodyweight at home and lifts at the gym is already running two systems.

Why are jockeys weighed in stone and pounds?

Because racing kept the unit along with the rest of its vocabulary. A weight of 9 st 7 lb in a British or Irish handicap is 133 lb, or 60.3 kg, and it is the total the horse carries - jockey and saddle together, not the rider alone. Weights are raised and lowered by the pound, which is why a racecard prints the two numbers separately rather than a decimal.

How do I add two weights written in stone and pounds?

Convert both to pounds, add, then convert back. Adding 11 st 9 lb to 2 st 8 lb column by column gives 13 st 17 lb, which is not a weight at all - the pounds carry at 14, not at 10, so the answer is 14 st 3 lb. This is why spreadsheets holding British bodyweights almost always store total pounds and format the display.

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