Weight converter
Stone to Kilogram Converter
Convert st to kg or reverse with one click. Type a value below for an instant result.
Stone st
Kilogram kg
st → kg · runs in your browser, no server
How to convert stone to kilogram
Stone (st) and Kilogram (kg) both measure weight. Whether you are studying, traveling, cooking, or working on a project, converting between them should be fast and accurate.
This page converts stone to kilogram — ideal when American or British measurements need to match metric specs, school assignments, or international standards.
The standard relationship used on this page means that 1 stone equals 6.35029 kg. Enter any number in the calculator — use the swap button to reverse the direction without leaving the page.
Converting 12 st gives 76.20348 kg. This is a practical reference when switching between stone and kilogram for recipes, shipping labels, fitness tracking, and luggage limits.
Need kilogram to stone instead? Try our Kilogram to Stone converter. kg → stone
When you'll use this
- Converting a UK body weight reported in stone (a common British way to state weight) into kg for a fitness app or medical form
- Checking a UK boxing or wrestling weight class (often stated in stone historically) against a kg-based international federation limit
- Converting a racehorse jockey's weight allowance, traditionally given in stone, into kg for international racing comparisons
- Understanding a historical British weight reference (old scales, period literature) in modern metric terms
- Converting a UK weight-loss goal stated in stone into kg for a non-UK tracking app
Practical note
Stone is used almost exclusively in the UK and Ireland for reporting body weight, so this page is mostly used by British users interacting with international kg-based apps, or by non-UK users trying to make sense of a British weight reference. A common figure like "12 stone" converts to about 76.2 kg, letting a UK gym-goer log their weight in the kg format nearly every international fitness app, doctor's scale, and gym plate expects. It also shows up in sports history and commentary — jockey weight allowances and old boxing weigh-ins were traditionally recorded in stone, and this page translates those figures into the kg terms used by modern international sport.
Tips
- 1 stone equals exactly 6.35029 kg, and there are 14 lb in a stone — so "11 stone 6" (11 × 14 + 6 = 160 lb) converts differently than a plain "11.6 stone" decimal would suggest.
- Most UK bathroom scales and NHS materials use stone, while nearly every other country and most fitness apps use kg — this page bridges that gap directly.
- When converting a mixed "stone and pounds" figure, convert the pounds portion separately and add it, rather than treating the decimal part as a fraction of a stone.
Read our full guide: Weight units explained
st to kg conversion table
| st | kg |
|---|---|
| 1 | 6.35029 |
| 2 | 12.70058 |
| 5 | 31.75145 |
| 10 | 63.5029 |
| 25 | 158.75725 |
| 50 | 317.5145 |
| 100 | 635.029 |
| 200 | 1270.058 |
| 500 | 3175.145 |
kg to st conversion table
Or click the swap button in the converter to switch from kg to st.
| kg | st |
|---|---|
| 1 | 0.157473 |
| 4 | 0.629892 |
| 8 | 1.259784 |
| 16 | 2.519569 |
| 32 | 5.039139 |
| 64 | 10.078279 |
| 128 | 20.156559 |
| 150 | 23.620968 |
| 200 | 31.494624 |
Frequently asked questions
How many kilograms are in 1 stone? +
One stone equals 6.35029 kg. Use the converter above for any value — results are calculated locally with full precision.
How do I convert st to kg? +
Use the formula: kg = st × 6.35029. Enter your value in the calculator and the result appears instantly. Click the swap button to convert kg back to st.
How many stones are in 1 kilogram? +
One kilogram equals 0.157473 st. Swap the converter direction to work backwards from kg to st.
What is 10 st in kg? +
10 st is 63.5029 kg. See the conversion table on this page for more common values.
When would I convert stone to kilogram? +
This conversion is useful for recipes, shipping labels, fitness tracking, and luggage limits. ConvertHub runs entirely in your browser — no data is uploaded to any server.
Is stone to kilogram the same as kilogram to stone? +
They are inverse operations. This page focuses on st → kg with examples and tables for that direction. For kg → st, use our separate kilogram to stone converter page.