Stone to KG Converter
Enter stone and pounds to get kilograms. One stone is exactly 14 pounds, which is 6.35029318 kg.
11 st 6 lb =
72.5748kg
11 st 6 lb is 72.5748 kilograms.
- 1 st
- 6.3503 kg
- 1 kg
- 0.1575 st
How this works: Method, 4 sources,
How this works
Method
Turn the whole weight into pounds first: multiply the stone by 14 and add the loose pounds. Then multiply that total by 0.45359237 to get kilograms. Doing it in pounds avoids the most common slip, which is treating “14 st 3 lb” as 14.3 stone. Full method
Sources
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Changes
- Ask understands “5 ft 9 in to cm” and “2 cups of flour in grams” and answers at once, and a decimal comma (“2,5”) reads as 2.5.
- First published: 89 everyday units across ten quantities, with 58 pages for common pairs such as cm to inches and Celsius to Fahrenheit.
How to convert stone and pounds to kg
Turn the whole weight into pounds first: multiply the stone by 14 and add the loose pounds. Then multiply that total by 0.45359237 to get kilograms. Doing it in pounds avoids the most common slip, which is treating “14 st 3 lb” as 14.3 stone.
For 14 st 3 lb: 14 × 14 = 196, plus 3 is 199 lb, and 199 × 0.45359237 = 90.26 kg. If you only have whole stone, a single step works: 14 st × 6.35029318 = 88.9 kg.
A pound is 0.4536 kg, so each extra pound on the scale adds a little under half a kilogram, and each stone adds 6.35 kg.
kilograms = stone × 6.35029318
- Schedule 1 of the UK Weights and Measures Act 1985 defines the stone as 14 pounds; with the pound at 0.45359237 kg, one stone is 6.35029318 kg. Source: UK Weights and Measures Act 1985, Schedule 1.
How to estimate stone to kg in your head
Multiply the stone by 6, then add a third of the stone on top, since 6.35 is only a shade above 6⅓. For 14 stone: 14 × 6 = 84, a third of 14 is about 4.7, total 88.7 kg against the exact 88.9. Then add a little under half a kilogram for each spare pound: 3 lb ≈ 1.4 kg.
Even simpler for a ballpark: 10 stone is about 63.5 kg, and each further stone adds roughly 6.4 kg.
Stone to kilograms chart
Whole stone from 6 to 25, with the same weight in pounds.
| Stone | Pounds (lb) | Kilograms (kg) |
|---|---|---|
| 6 st | 84 | 38.1018 |
| 7 st | 98 | 44.4521 |
| 8 st | 112 | 50.8023 |
| 9 st | 126 | 57.1526 |
| 10 st | 140 | 63.5029 |
| 11 st | 154 | 69.8532 |
| 12 st | 168 | 76.2035 |
| 13 st | 182 | 82.5538 |
| 14 st | 196 | 88.9041 |
| 15 st | 210 | 95.2544 |
Show all 20 rowsShow fewer
| 16 st | 224 | 101.605 |
| 17 st | 238 | 107.955 |
| 18 st | 252 | 114.305 |
| 19 st | 266 | 120.656 |
| 20 st | 280 | 127.006 |
| 21 st | 294 | 133.356 |
| 22 st | 308 | 139.706 |
| 23 st | 322 | 146.057 |
| 24 st | 336 | 152.407 |
| 25 st | 350 | 158.757 |
Frequently Asked Questions
How many kg is 11 stone 6 pounds?
11 st 6 lb is 160 lb, which is 72.57 kg.
Is 12.5 stone the same as 12 stone 5 pounds?
No. 12.5 stone means twelve and a half stone, which is 12 st 7 lb (175 lb, 79.38 kg). 12 st 5 lb is two pounds lighter: 173 lb, or 78.47 kg.
How do I enter a weight in pounds only?
Put 0 in the stone box and the pounds in the pounds box, or use the lbs to kg converter. The pounds box accepts more than 14 too; 0 st 160 lb gives the same 72.57 kg as 11 st 6 lb.