Weight
stone and pounds to kg Converter
Convert stone plus pounds into kilograms for forms, fitness apps, and medical records.
Convert weight
Enter pounds from 0 to 13.999. Values above 14 still calculate correctly as total pounds.
How to use this calculator
- Enter the values the calculator asks for.
- Check the instant result and alternate values below it.
- Use the chart and formula to verify common examples.
stone and pounds to kg chart
| Stone + pounds | Kilograms | Total pounds |
|---|---|---|
| 8 st 0 lb | 50.8023 kg | 112 lb |
| 9 st 0 lb | 57.1526 kg | 126 lb |
| 10 st 0 lb | 63.5029 kg | 140 lb |
| 10 st 7 lb | 66.6781 kg | 147 lb |
| 11 st 0 lb | 69.8532 kg | 154 lb |
| 12 st 0 lb | 76.2035 kg | 168 lb |
| 13 st 0 lb | 82.5538 kg | 182 lb |
| 14 st 0 lb | 88.9041 kg | 196 lb |
Formula
kg = (stone x 14 + pounds) x 0.45359237
Source
Kilogram-based SI definitions and exact avoirdupois pound relationships.
Common questions
How does the stone and pounds to kg Converter work?
Convert stone plus pounds into kilograms for forms, fitness apps, and medical records.
What formula does this calculator use?
kg = (stone x 14 + pounds) x 0.45359237
Is the result exact?
Kilogram-based SI definitions and exact avoirdupois pound relationships. Some displayed values are rounded for readability, but the calculator keeps more precision internally.