Stone to Pounds and Kilograms
Last updated February 14, 2026 · Weight & Mass
One stone equals exactly 14 pounds, or 6.35029318 kilograms. The stone remains the everyday unit for body weight in the United Kingdom and Ireland, even though shop scales and medical records use kilograms.
How British weights are written
Body weight is quoted as stone plus pounds, written "11 st 4 lb" and spoken "eleven stone four". Converting to pounds means multiplying the stone by 14 and adding the remainder: 11 × 14 + 4 = 158 lb.
Stone, pounds and kilograms
| Stone | Pounds / kilograms |
|---|---|
| 8 st | 112 lb / 50.8 kg |
| 10 st | 140 lb / 63.5 kg |
| 11 st | 154 lb / 69.9 kg |
| 12 st | 168 lb / 76.2 kg |
| 14 st | 196 lb / 88.9 kg |
| 16 st | 224 lb / 101.6 kg |
Regional note
The stone is not used in the United States, Canada, Australia or New Zealand, where body weight is given in pounds (US) or kilograms (CA, AU, NZ).