8 Stone to KG
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Medically ReviewedRounded to 2 decimal places. Standard UK/IE ratio (1 st = 6.35029 kg).
Exact Conversion Formula
Calculation Formula
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, or 112 pounds. The exact calculation is 8 × 6.35029 = 50.8023 kg, rounded to two decimal places.
Whether 8 stone falls within a typical BMI category depends on height. At 5ft 6in, it gives a BMI of 18.0; at 5ft 2in, it gives a BMI of 20.6. BMI is a screening measure rather than a diagnosis, and the table below shows how the result changes across heights.
Dr Muhammad Usman, MBBS
A weight cannot be interpreted without height and personal context. BMI can provide a height-based screening estimate, but it does not diagnose health or explain symptoms. If you are concerned about unintentional weight loss or symptoms, speak with a GP.
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.