UK weight-loss calculator
Weight converter
Convert between kilograms, stone and pounds. Type into either box below, or pick a specific conversion for a full chart.
Updated
kg = st lb
Displayed values are rounded for readability, but the arithmetic uses the full precision of the internationally defined factors, a pound is exactly 0.45359237 kg and a stone is exactly 14 pounds, so converting back and forth will not drift.
Kilograms to Stone and pounds
11 st 0.3 lb
70 kg converts to the figure on the left, exactly. Nothing in it is an approximation.
Converting weight in the UK
The UK uses all three units, often at once, scales in stone, medical forms in kilograms, fitness apps in pounds. These conversions are exact rather than approximate: a pound is defined as precisely 0.45359237 kilograms, and a stone is exactly 14 pounds.
Decimal stone is not stone and pounds
11.5 stone means 11 stone 7 pounds, not 11 stone 5 pounds, the decimal is a fraction of 14, not of 10. This converter always shows stone and pounds separately, so there is nothing to misread.
| Kilograms | Stone and pounds |
|---|---|
| 45 kg | 7 st 1.2 lb |
| 50 kg | 7 st 12.2 lb |
| 55 kg | 8 st 9.3 lb |
| 60 kg | 9 st 6.3 lb |
| 65 kg | 10 st 3.3 lb |
| 70 kg | 11 st 0.3 lb |
| 75 kg | 11 st 11.3 lb |
| 80 kg | 12 st 8.4 lb |
| 85 kg | 13 st 5.4 lb |
| 90 kg | 14 st 2.4 lb |
| 95 kg | 14 st 13.4 lb |
| 100 kg | 15 st 10.5 lb |
| 105 kg | 16 st 7.5 lb |
| 110 kg | 17 st 4.5 lb |
| 115 kg | 18 st 1.5 lb |
| 120 kg | 18 st 12.6 lb |
| 125 kg | 19 st 9.6 lb |
| 130 kg | 20 st 6.6 lb |
| 135 kg | 21 st 3.6 lb |
| 140 kg | 22 st 0.6 lb |
Every weight conversion
- kg to stoneKilograms into stone and pounds, with a full chart.
- stone to kgStone and pounds into kilograms.
- kg to lbsKilograms into pounds. Also written kg to pounds.
- lbs to kgPounds into kilograms. Also written pounds to kg.
- lbs to stonePounds into stone and pounds.
- stone to lbsStone into total pounds. Also written stone to pounds.