Convert kilograms to st and lb
Enter a value in kilograms to instantly convert to stones and pounds.
If you have ever seen body weight listed as 11 st 4 lb and wondered how that compares to kilograms, you are not alone. The stone-and-pound system is common in the UK and Ireland, while kilograms are used almost everywhere else. This calculator gives you an instant, accurate conversion from kg to stones and pounds.
How the kg to stones and pounds conversion works
The conversion uses fixed constants:
- 1 kilogram = 2.2046226218 pounds
- 1 stone = 14 pounds
To convert kilograms to stones and pounds:
- Convert kilograms to total pounds.
- Divide total pounds by 14 to get whole stones.
- The remaining pounds are the pounds part.
Formula
total pounds = kilograms × 2.2046226218
stones = floor(total pounds ÷ 14)
pounds = total pounds − (stones × 14)
Example conversions
| Kilograms | Stones and Pounds | Total Pounds |
|---|---|---|
| 50 kg | 7 st 12.23 lb | 110.23 lb |
| 60 kg | 9 st 6.28 lb | 132.28 lb |
| 70 kg | 11 st 0.32 lb | 154.32 lb |
| 80 kg | 12 st 8.37 lb | 176.37 lb |
| 90 kg | 14 st 2.41 lb | 198.42 lb |
When this converter is useful
- Health and fitness: compare weights from UK and international sources.
- Medical records: quickly translate between unit systems.
- Travel: understand local weight references when abroad.
- Sports: interpret athlete and boxing/wrestling weight categories.
Common questions
What is a stone?
A stone is a British imperial unit of mass equal to 14 pounds. It is mainly used for body weight.
Can I use decimals in kilograms?
Yes. This calculator accepts decimal values like 67.4 kg and returns pounds to two decimal places.
Why do I see both stones/pounds and total pounds?
Different contexts use different formats. People often discuss body weight in st + lb, while equipment specs and scientific references may use total pounds.
Quick tip for interpretation
If your converted pounds value is close to 14, the next whole stone may be more intuitive. For example, 11 st 13.9 lb is essentially just under 12 st.
Use the calculator above whenever you need a fast and reliable kg to stones and pounds conversion.