Weight Converter — kg, lb, st
A simple, exact converter between the weight units used in health content: kilograms (kg), pounds (lb) and stones (st). One pound is exactly 0.45359237 kg by international definition; one stone is 14 lb.
In India most clinical weight is recorded in kilograms. Use kilograms for medical records and conversations with healthcare professionals; the other units help when reading international content.
Weight converter
Convert between kilograms, pounds and stones.
Methodology & references
Exact conversions: 1 kg = 2.20462262185 lb; 1 stone = 14 lb = 6.35029318 kg.
References
Limitations
- Pure arithmetic conversion — no clinical meaning on its own.
How to use this calculator
- Enter the weight you want to convert.
- Pick the unit it is currently in.
- Press Calculate to see the value in all other units.
Understanding your result
Conversions use exact international definitions and are rounded only for display. Small apparent differences come from that display rounding, not from the conversion itself.
Methodology & references
Exact conversions: 1 kg = 2.20462262185 lb; 1 stone = 14 lb = 6.35029318 kg.
Limitations
- Pure arithmetic conversion — no clinical meaning on its own.
Frequently asked questions
Are the conversions exact?
Yes. Kilograms and pounds are related by the exact international definition (1 lb = 0.45359237 kg), and a stone is exactly 14 lb. Displayed values are rounded for readability.
What is a stone (st)?
A stone is 14 pounds, about 6.35 kg. It is used mainly in the United Kingdom and Ireland.
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