Stone times fourteen
pounds = stone × 14
One stone is exactly 14 pounds, a British unit still used for body weight in the UK and Ireland. To do it in your head, take stone × 10 and add stone × 4: 12 stone is 120 + 48 = 168 lb. A mixed weight like “11 stone 7” is 11 × 14 + 7 = 161 lb.
Stone to pounds, body-weight range
| Stone | Pounds | Kilograms |
|---|---|---|
| 7 st | 98 lb | 44.5 kg |
| 9 st | 126 lb | 57.2 kg |
| 10 st | 140 lb | 63.5 kg |
| 11 st | 154 lb | 69.9 kg |
| 12 st | 168 lb | 76.2 kg |
| 13 st | 182 lb | 82.6 kg |
| 14 st | 196 lb | 88.9 kg |
| 16 st | 224 lb | 101.6 kg |
| 18 st | 252 lb | 114.3 kg |
| 20 st | 280 lb | 127.0 kg |
Half a stone is 7 lb; a quarter is 3.5 lb. One stone is also about 6.35 kg.
Watch the leftover pounds
- Going from pounds, keep the remainder. 155 lb is 11 stone 1 lb (155 ÷ 14 = 11 remainder 1), not a flat 11 stone.
- Stone is not kilograms. “12 stone” is 168 lb, over five times heavier than 12 kg. It is an easy slip when reading British weights.
- The word stays singular. British usage says “14 stone,” not “14 stones,” when stating a weight.
Common questions
How many pounds are in a stone?
Exactly 14 pounds. It is a fixed conversion, so no rounding is involved: 1 stone is 14 lb.
What is 12 stone 7 in pounds?
It means 12 stone and 7 pounds, so 12 times 14 is 168, plus 7 is 175 lb (about 79.4 kg).
Is stone used in the United States?
No. Americans give body weight in pounds and rarely use stone at all, so convert to pounds when speaking to a US audience.
