Convert Stones to Kilograms — Free st to kg Converter
Convert st to kg as you type.
Weight Converter Australia - Fast & Accurate ConversionsReference for one unit; displayed values may be rounded.
Stones
Use a dot or comma for decimals, without thousands separators.
Kilograms
Display rounding does not improve the accuracy of your original measurement. Very large or very small results use scientific notation.
Method and sourcest to kg Conversion Formula
To convert stones to kilograms, multiply the stone value by 6.35029. One imperial stone is defined as 14 pounds, and 14 pounds equal 6.35029 kilograms.
Stones and Kilograms Explained
Stones (st)
A stone (st) is an imperial unit of weight equal to 14 pounds, or 6.35029 kilograms — about the weight of a bowling ball or a car tyre. Uniquely among surviving imperial units, it is used almost entirely for one purpose: human body weight. A typical UK adult weighs somewhere between 8 st and 20 st, and British bathroom scales, slimming clubs, and tabloids all speak in stones and pounds rather than pounds alone.
Where it is used: The stone is the everyday body-weight unit in the United Kingdom and Ireland — and an occasional puzzle for Australians consuming British media. It also lives on in British horse racing handicaps and boxing broadcasts.
Origin: Stones were regional market weights for wool and meat since medieval times; in 1385 England fixed the wool stone at 14 lb, and that value survived as the single legal stone.
Kilograms (kg)
A kilogram (kg) is the base unit of mass in the metric system, equal to 1000 grams. It covers the full human scale — a 4 kg house cat, a 32 kg golden retriever, a 70 kg adult, a 120 kg NRL prop — and is the unit Australian medicine, science, and everyday life use for body weight. One kilogram is 2.20462 lb, so 14 lb (one stone) makes 6.35029 kg.
Where it is used: Kilograms are the only legal weight unit for trade in Australia and the universal unit in GP clinics, hospitals, Medicare records, and gym programs — as well as in medical records nearly everywhere.
Origin: The kilogram was created in 1790s France as the mass of a litre of water and became the SI base unit of mass, redefined in 2019 using the Planck constant.
Stones to Kilograms Conversion Table
Select a value to use it in the calculator.
| Stones (st) | Kilograms (kg) |
|---|---|
| 3.175145 kg | |
| 6.35029 kg | |
| 12.70058 kg | |
| 19.05087 kg | |
| 25.40116 kg | |
| 31.75145 kg | |
| 38.10174 kg | |
| 44.45203 kg | |
| 50.80232 kg | |
| 57.15261 kg | |
| 63.5029 kg | |
| 69.85319 kg | |
| 76.20348 kg | |
| 82.55377 kg | |
| 88.90406 kg | |
| 95.25435 kg | |
| 101.60464 kg | |
| 107.95493 kg | |
| 114.30522 kg | |
| 127.0058 kg |
Kilograms to Stones Conversion Table
| Kilograms (kg) | Stones (st) |
|---|---|
| 1 kg | 0.1574731233 st |
| 10 kg | 1.5747312327 st |
| 20 kg | 3.1494624655 st |
| 30 kg | 4.7241936982 st |
| 40 kg | 6.298924931 st |
| 50 kg | 7.8736561637 st |
| 55 kg | 8.6610217801 st |
| 60 kg | 9.4483873965 st |
| 65 kg | 10.2357530129 st |
| 70 kg | 11.0231186292 st |
| 75 kg | 11.8104842456 st |
| 80 kg | 12.597849862 st |
| 90 kg | 14.1725810947 st |
| 100 kg | 15.7473123275 st |
Stones to Kilograms in Everyday Objects
Common real-world examples that make Stones and Kilograms easy to picture at a glance.
| Stones (st) | Kilograms (kg) | |
|---|---|---|
| A house cat | 0.6298924931 st | 4 kg |
| A bowling ball | 0.9999543328 st | 6.35 kg |
| A beagle | 1.5747312327 st | 10 kg |
| A bag of dog food | 1.8896774793 st | 12 kg |
| A golden retriever | 5.0391399448 st | 32 kg |
| A washing machine | 11.0231186292 st | 70 kg |
When You Need Stones to Kilograms Conversions
Translating British Medical Records
Your British-born parent's old records list 15 st, but their Australian GP needs kilograms. Converting to 95.254 kg fills the new-patient form accurately — and matters for anaesthesia and dosing.
Watching British Weight-Loss Shows
British programs celebrate milestones in stones while Australian viewers track kilograms. A 20 st starting weight is 127.006 kg — the figure Aussie audiences compare against their own bathroom scales.
Studying Form for the Melbourne Cup
British race cards list handicaps in stones, while Australian racing uses kilograms. When English stayers arrive for the Cup, a 10 st handicap converts to 63.5029 kg including tack — so you can compare them properly against locally weighted runners.
Aussie Boxers on UK Fight Cards
British promos quote fighters in stones while Australian broadcasts use kilograms and sanctioning bodies weigh in kilograms. A 14 st 6 lb cruiserweight converts to 91.626 kg — the tale of the tape you'll actually read.
Related Weight Conversions
How to Use
-
1
Enter Your Weight in Stones
Type the stone value — for example, enter 12 for the classic 12 st (168 lb) reading on an old British bathroom scale
-
2
See the Kilogram Equivalent
The result appears instantly: 12 st = 76.2035 kg, the figure Australian doctors, hospitals, and gym programs all work with
-
3
Copy or Reverse
Copy the result or click Swap to convert kilograms back to stones
-
4
Check the Table
Browse the conversion table for common values like 10 st = 63.5029 kg or 14 st = 88.9041 kg
Why Use Be Converter?
Instant Conversion
Get accurate stone to kilogram results in real-time as you type — enter 12 and see 76.2035 kg before the kettle's boiled for your cuppa
Exact Imperial Standard
Uses the defined relation of 1 st = 14 lb = 6.35029 kg, so a 10 st reading converts to 63.5029 kg exactly as your GP's records and gym programs expect
Body Weight Reference Table
Every whole stone from 6 st to 20 st at a glance — the range you need when decoding British BMI charts and UK bathroom scales that never went metric
Swap with One Click
Toggle between st and kg instantly — ideal when your rellies in London talk stones but your personal trainer in Melbourne works in kilograms
Free & Unlimited
No registration required. Convert as many weights as you need, from lightweight jockeys to AFL ruckmen — always free
Completely Private
All calculations run locally in your browser. Your body weight data never leaves your device — not even to the neighbours over the fence
Frequently Asked Questions
How many kilograms are in 1 stone?
How do I convert my weight from stones to kilograms?
What is 10 stone in kilograms?
What is 14 stone in kg?
Which countries still use stones for body weight?
What is 13 stone in kilograms?
How many stones is 70 kg?
Is a stone exactly 14 pounds?
About Stones to Kilograms Converter
Our free online stones to kilograms converter gives Australians instant, accurate conversions between Britain's stubborn body-weight unit and the metric system we've all grown up with. Whether you're translating a British medical report, following a UK weight-loss show, studying English raiders' handicaps for the Melbourne Cup, or decoding your Pom relatives' weights, this tool delivers reliable results. The stone equals 14 pounds or 6.35029 kilograms — a unit Australia left behind decades ago, but one that still pops up in British media and family chat.
Expert Tips for st to kg Conversion
Anchor on two marks: 10 st = 63.5 kg and 11 st = 69.85 kg. Most adult weights fall within a stone of these, so working it out gets easy — each stone adds 6.35 kg.
British scales often show stones and pounds together. Convert both parts: 13 st 4 lb is 82.554 kg plus 1.814 kg (4 lb), totalling 84.368 kg for precise records.
Australian BMI calculators — like the Better Health Channel's or your GP's — take kilograms. If you only know 16 st, enter 101.605 kg rather than guessing — small errors can shift you across a BMI category boundary.
British race cards write handicaps in stones, unlike Australian racing's kilograms. A 9 st carry is 57.1526 kg — handy when English stayers line up in the Spring Carnival and you want to compare their UK form against locally weighted runners.
For quick mental maths, multiply stones by 6.35: 14 × 6.35 = 88.9 kg, close enough for a chat at the pub. Save the exact 6.35029 factor for medical forms and official weigh-ins.
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