5 Stone to KG
Convert your weight
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.
5 stone equals exactly 31.75 kilograms (31.7515 kg). To calculate this manually, multiply 5 by the standard UK/IE conversion factor of 6.35029.
In imperial terms, 5 stone equals 70 pounds (5 st × 14 lb = 70 lb).
BMI can provide context for an adult weight, but it depends on height and is a screening measure rather than a diagnosis. Children should be assessed using age- and sex-specific growth charts, and personal concerns about weight, appetite or health should be discussed with a GP.
Is This a Healthy Weight? BMI by Height
| Height | KG | BMI | NHS Category |
|---|---|---|---|
| 5ft 0in (152cm) | 31.8 kg | 13.7 | Underweight |
| 5ft 2in (157cm) | 31.8 kg | 12.9 | Underweight |
| 5ft 4in (163cm) | 31.8 kg | 12.0 | Underweight |
| 5ft 6in (168cm) (UK avg) | 31.8 kg | 11.3 | Underweight |
| 5ft 8in (173cm) | 31.8 kg | 10.6 | Underweight |
| 5ft 10in (178cm) | 31.8 kg | 10.0 | Underweight |
| 6ft 0in (183cm) | 31.8 kg | 9.5 | Underweight |
| 6ft 2in (188cm) | 31.8 kg | 9.0 | Underweight |
Weights Close to 5 Stone
| Stones and Pounds | Kilograms | Total Pounds |
|---|---|---|
| 4 st 8 lb | 29.03 kg | 64 lbs |
| 4 st 10 lb | 29.94 kg | 66 lbs |
| 4 st 12 lb | 30.84 kg | 68 lbs |
| 5 st 0 lb | 31.75 kg | 70 lbs |
| 5 st 2 lb | 32.66 kg | 72 lbs |
| 5 st 4 lb | 33.57 kg | 74 lbs |
| 5 st 6 lb | 34.47 kg | 76 lbs |
| 5 st 8 lb | 35.38 kg | 78 lbs |
| 5 st 10 lb | 36.29 kg | 80 lbs |
| 5 st 12 lb | 37.19 kg | 82 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 5 stone in kg?
5 stone is 31.75 kg. The full calculation is 5 multiplied by 6.35029, giving 31.7515 kg, rounded to 31.75 kg.
What is 5 stone in pounds?
5 stone equals exactly 70 pounds. There are 14 pounds in one stone, so 5 times 14 equals 70.
Is 5 stone underweight for an adult?
BMI depends on height, age and other factors. At adult heights in the table below, 5 stone falls below the adult BMI threshold of 18.5, but BMI is a screening measure rather than a diagnosis.
Discuss personal concerns with a GP.
How should 5 stone be interpreted for a child?
A child's weight should be interpreted using age- and sex-specific growth charts, alongside height and development. Adult BMI categories are not suitable for assessing a child's weight.
How much is 5 stone 7 pounds in kg?
5 stone 7 pounds is 34.93 kg. Convert by multiplying total pounds by 0.453592: 5 times 14 plus 7 equals 77 pounds, then 77 multiplied by 0.453592 equals 34.93 kg.