Use this independent UK weight converter to change kilograms into stone and pounds, decimal stone and total pounds. It is useful when your scales or health information use different weight units.
KG to Stone and Pounds Calculator
Stone and pounds:
Decimal stone:
Total pounds:
How to convert kg to stone and pounds
One pound is 0.45359237 kg and one stone is 14 pounds. The calculator first converts kilograms to total pounds, then separates the total into whole stones and the remaining pounds. NHS weight conversion material commonly rounds one stone to about 6.35 kg.
Worked example: 70 kg
70 kg is about 154.3 lb. Dividing the pounds into groups of 14 gives 11 stone with about 0.3 lb remaining, so 70 kg is approximately 11 st 0.3 lb. It is also about 11.02 stone in decimal form.
Why UK weight is shown in different units
NHS England notes that home scales may display kilograms, pounds or stone. NHS questionnaires and clinical forms may also accept kilograms or stone and pounds. Converting units does not change your actual weight; it only changes how the measurement is expressed.
Weight conversion reference
| kg | Approx. stone & pounds |
|---|---|
| 50 | 7 st 12.2 lb |
| 60 | 9 st 6.3 lb |
| 70 | 11 st 0.3 lb |
| 80 | 12 st 8.4 lb |
| 90 | 14 st 2.4 lb |
| 100 | 15 st 10.5 lb |
How to record your weight consistently
For weight tracking, consistency matters more than the display unit. NHS England advises using the same scales in the same location, on a firm level surface, and weighing at a consistent time of day where practical.
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Frequently asked questions
How many pounds are in one stone?
One stone contains exactly 14 pounds.
How many kilograms are in one stone?
One stone is approximately 6.3503 kg.
What is 70 kg in stone and pounds?
70 kg is approximately 11 stone and 0.3 pounds.
Does this calculator tell me whether my weight is healthy?
No. This tool only converts units. It does not assess whether a weight is healthy. For that purpose, use an appropriate health assessment such as a BMI calculator where suitable.
Sources and disclaimer
Conversion method checked against standard weight-unit relationships and NHS weight conversion material. Weight-recording context is based on NHS England guidance. This website is independent and is not operated, approved or endorsed by the NHS. This calculator is for unit conversion only and is not medical advice.