8 Stone to KG
Conversion Result
Exact Conversion
8 stone = 50.80 kg
To convert any other weight from imperial to metric, you can use our primary stone to kg conversion tool for instant results.
8 stone is 50.80 kilograms. The precise figure is 50.8023 kg, which comes from multiplying 8 by 6.35029. This is also 112 pounds. 8 stone is one of the more commonly referenced weights in the UK, often serving as a target weight or a point of reference for people monitoring their health and fitness metrics.
For an adult of average UK height (5ft 6in), 8 stone results in a BMI of 18.0, which is classified as underweight. To reach the minimum healthy BMI of 18.5 at this height, a weight of about 52.3 kg is required. However, for shorter adults around 5ft 2in (157cm) or shorter, 8 stone falls within the healthy BMI range. It is a weight that is often seen in younger women and those with naturally petite frames.
Dr Muhammad Usman, MBBS
I consider 8 stone a “threshold” weight in clinical consultations. For many patients, it represents a line between being borderline healthy and being underweight, depending entirely on their height. If you are 8 stone and frequently feel cold, fatigued, or notice your hair thinning, these may be signs that your weight is too low for your body’s needs, regardless of what the BMI chart says. Clinical health is more than just the number—it’s how your body functions at that number.
Is This a Healthy Weight? BMI by Height
| Height | KG | BMI | NHS Category |
|---|---|---|---|
| 5ft 0in (152cm) | 50.8 kg | 22.0 | Healthy Weight |
| 5ft 2in (157cm) | 50.8 kg | 20.6 | Healthy Weight |
| 5ft 4in (163cm) | 50.8 kg | 19.1 | Healthy Weight |
| 5ft 6in (168cm) (UK avg) | 50.8 kg | 18.0 | Underweight |
| 5ft 8in (173cm) | 50.8 kg | 17.0 | Underweight |
| 5ft 10in (178cm) | 50.8 kg | 16.0 | Underweight |
| 6ft 0in (183cm) | 50.8 kg | 15.2 | Underweight |
| 6ft 2in (188cm) | 50.8 kg | 14.4 | Underweight |
Weights Close to 8 Stone
| Stones and Pounds | Kilograms | Total Pounds |
|---|---|---|
| 7 st 8 lb | 48.08 kg | 106 lbs |
| 7 st 10 lb | 48.99 kg | 108 lbs |
| 7 st 12 lb | 49.90 kg | 110 lbs |
| 8 st 0 lb | 50.80 kg | 112 lbs |
| 8 st 2 lb | 51.71 kg | 114 lbs |
| 8 st 4 lb | 52.62 kg | 116 lbs |
| 8 st 6 lb | 53.52 kg | 118 lbs |
| 8 st 8 lb | 54.43 kg | 120 lbs |
| 8 st 10 lb | 55.34 kg | 122 lbs |
| 8 st 12 lb | 56.25 kg | 124 lbs |
For more weight comparisons, see our full stone to kg chart. Need to go the other way? Try our kg to stone converter. You can also check your BMI using our NHS/WHO-aligned BMI calculator.
Related Conversions
Frequently Asked Questions
What is 8 stone in kg?
8 stone is 50.80 kg. Multiply 8 by 6.35029 to get 50.8023 kg, which rounds to 50.80 kg.
Is 8 stone healthy for a woman?
It depends on height. For women between 4ft 11in and 5ft 4in, 8 stone falls within the NHS healthy weight range. For women of 5ft 5in or taller, 8 stone gives a BMI that is at the lower end of healthy or slightly underweight. Check the table on this page for your exact height.
What is 8 stone in pounds?
8 stone is exactly 112 pounds. One stone equals 14 pounds, so 8 times 14 equals 112.
Is 8 stone too thin for a 5ft 5in woman?
At 5ft 5in, 8 stone gives a BMI of approximately 18.6, which is just within the healthy range. At 5ft 6in the same weight gives a BMI of 18.1, which edges into underweight. The boundary is very close at this height, so it is worth monitoring.
How much is 8 stone 4 pounds in kg?
8 stone 4 pounds is 52.62 kg. Calculate total pounds first: 8 times 14 plus 4 equals 116 pounds. Then 116 multiplied by 0.453592 equals 52.62 kg.