UK weight-loss calculator
15 stone in kg
15 stone is 95.3 kg. Below: how that is worked out, and what it means at your height.
Updated
st lb = kg
Displayed values are rounded for readability, but the arithmetic uses the full precision of the internationally defined factors, a pound is exactly 0.45359237 kg and a stone is exactly 14 pounds, so converting back and forth will not drift.
Stone and pounds to Kilograms
95.3 kg
15 st 0 lb converts to the figure on the left, exactly. Nothing in it is an approximation.
Converting 15 st
15 stone is 95.3 kg. A stone is exactly 14 pounds and a pound is exactly 0.45359237 kg, so 15 st is 210 lb, and 210 lb is 95.3 kg.
The halves either side
Scales and people rarely stop at whole stone. 14 st 7 lb is 92.1 kg and 15 st 7 lb is 98.4 kg, so a half stone either side of 15 st spans 92.1 to 98.4 kg.
What 15 stone means at different heights
At none of the heights below is 15 st inside the range the NHS calls a healthy weight. It reads as obese (class 3) at 5 ft 0 in and overweight at 6 ft 2 in.
| Height | BMI | NHS category | From healthy range |
|---|---|---|---|
| 5 ft 0 in | 41.0 | Obese (class 3) | 37.4 kg over |
| 5 ft 2 in | 38.4 | Obese (class 2) | 33.5 kg over |
| 5 ft 4 in | 36.0 | Obese (class 2) | 29.4 kg over |
| 5 ft 6 in | 33.9 | Obese (class 1) | 25.3 kg over |
| 5 ft 8 in | 32.0 | Obese (class 1) | 20.9 kg over |
| 5 ft 10 in | 30.1 | Obese (class 1) | 16.5 kg over |
| 6 ft 0 in | 28.5 | Overweight | 11.9 kg over |
| 6 ft 2 in | 27.0 | Overweight | 7.2 kg over |
Losing 5 to 20% of 15 stone
Weight-loss advice is usually quoted in percentages, which is hard to picture. From 15 stone, this is what each of those marks comes to.
| Reduction | Weight lost | New weight | In stone and pounds |
|---|---|---|---|
| 5% | 4.8 kg | 90.5 kg | 14 st 3.6 lb |
| 10% | 9.5 kg | 85.8 kg | 13 st 7.1 lb |
| 15% | 14.3 kg | 81 kg | 12 st 10.6 lb |
| 20% | 19.1 kg | 76.2 kg | 12 st 0.1 lb |
The weight loss calculator estimates how long reaching one of those could take at a safe pace, and the weight loss percentage calculator works the other way round, turning weight already lost into a percentage.
BMI is a screening measure, not a diagnosis, and it says nothing on its own about how healthy you are. It does not know how much of you is muscle, and the thresholds are lower for some family backgrounds. What your BMI does and does not say.
The values either side
Very few people are a whole number of stone, and the one you want is usually next door.
For the conversion in the other direction, see kg to stone, or stone to pounds for the same weight in pounds alone. The BMI calculator takes your own height rather than the eight above.