Stone to Lbs: Stone and Pounds Converter
Stones and pounds as two fields, the way people write the unit.
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Free · No sign-up · Updates as you type · Exact factor, per NIST
- 8 st112 lb50.8 kg
- 9 st126 lb57.2 kg
- 10 st140 lb63.5 kg
- 11 st154 lb69.9 kg
- 12 st168 lb76.2 kg
- 13 st182 lb82.6 kg
- 14 st196 lb88.9 kg
- 15 st210 lb95.3 kg
- 16 st224 lb101.6 kg
The relationship
1 stone = 6.35029318 kg (exact)
Worked example: 11 st 4 lb is 11 × 14 + 4 = 158 lb, which is 71.67 kg.
Both are exact, since the pound is defined as exactly 0.45359237 kilograms and a stone is exactly fourteen pounds.
Conversion table
| Stone | Pounds | Kilograms |
|---|---|---|
| 7 st | 98 | 44.45 |
| 8 st | 112 | 50.80 |
| 9 st | 126 | 57.15 |
| 10 st | 140 | 63.50 |
| 11 st | 154 | 69.85 |
| 12 st | 168 | 76.20 |
| 13 st | 182 | 82.55 |
| 14 st | 196 | 88.90 |
| 15 st | 210 | 95.25 |
| 16 st | 224 | 101.60 |
| 17 st | 238 | 107.95 |
| 18 st | 252 | 114.31 |
Common questions
How many pounds are in a stone?
Fourteen pounds, exactly. The relationship is definitional rather than approximate, so a stone is always precisely 14 pounds and converting between the two introduces no error.
What is 12 stone in pounds and kg?
12 stone is 168 pounds, or 76.20 kilograms. The pounds figure is exact because a stone is exactly 14 pounds; the kilogram figure comes from the pound being exactly 0.45359237 kilograms.
Why is stone still used?
Mainly in the United Kingdom and Ireland for body weight. It is rarely used elsewhere and almost never for anything other than people.
How do I write a weight in stones and pounds?
As stones followed by the remaining pounds, such as 12 st 6 lb. The pounds part is always less than 14, since 14 would be another stone.
Related converters and guides
Sources
- NIST Guide to the SI, Appendix B: Conversion Factors. National Institute of Standards and Technology. Source for every conversion factor on this page, and for which factors are exact rather than rounded.