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Stone to Kilogram Converter

Enter the value that you want to convert stone (st) to kilogram (kg) or kilogram to stone.Also written as ST to KG conversion.

1 stone = 5.6699046 kilogram

Formula: kilogram = stone value × 5.6699046

ST to KGstone to kilogram

st
56.69905kg

10 stone = 56.69905 kilogram

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Stone to Kilogram: The Essentials

The Stone Explained

Stone (st) is a unit of weight measurement. 1 stone is equal to 5.6699046 kilogram.

The Kilogram Explained

Kilogram (kg) is a unit of weight measurement. 1 kilogram is equal to 0.1763698 stone.

Understanding Weight Conversions

Weight unit conversions are among the most frequently performed in daily life. International commerce ships in metric tonnes and kilograms, while US domestic logistics uses pounds and ounces. Recipes from different countries use different systems — a European cake recipe in grams versus an American one in cups and ounces. Pharmacists convert between milligrams and grains for medication dosing. Athletes track body weight across metric and imperial systems depending on their country and sport federation requirements.

stone to kilogram metric conversion table

0.01 st=0.05670 kg
0.1 st=0.56699 kg
1 st=5.66990 kg
2 st=11.33981 kg
3 st=17.00971 kg
4 st=22.67962 kg
5 st=28.34952 kg
6 st=34.01943 kg
7 st=39.68933 kg
8 st=45.35924 kg
9 st=51.02914 kg
10 st=56.69905 kg
11 st=62.36895 kg
12 st=68.03886 kg
13 st=73.70876 kg
14 st=79.37866 kg
15 st=85.04857 kg
16 st=90.71847 kg
17 st=96.38838 kg
18 st=102.05828 kg
19 st=107.72819 kg
20 st=113.39809 kg
30 st=170.09714 kg
40 st=226.79619 kg
50 st=283.49523 kg
60 st=340.19428 kg
70 st=396.89332 kg
80 st=453.59237 kg
90 st=510.29142 kg
100 st=566.99046 kg
200 st=1133.98093 kg
300 st=1700.97139 kg
400 st=2267.96185 kg
500 st=2834.95231 kg
600 st=3401.94277 kg
700 st=3968.93324 kg
800 st=4535.92370 kg
900 st=5102.91416 kg
1000 st=5669.90463 kg

How to Convert ST to KG (Stone to Kilogram)?

We can convert stone to kilogram by using an example.

Example:

Convert 20 Stone to Kilogram?

We know 1 Stone = 5.6699046 kilogram; 1 Kilogram = 0.1763698 stone.

20 stone = ___kg

20 × 5.6699046 = 113.39809 kg (we know 1 stone = 5.6699046 kilogram)

Answer:

20 stone = 113.39809 kilogram

How to Convert Stone to Kilograms (Step-by-Step)

One stone equals exactly 6.35029 kg (14 lbs). The stone is used in the UK and Ireland for body weight. Converting to kilograms is needed for medical forms, international travel, and fitness tracking apps that use metric units.

  1. Identify the weight in stone (st) you want to convert.
  2. Multiply by 6.35029 to get the value in kilograms.
  3. If the weight includes pounds (e.g., 10 st 7 lbs), convert pounds separately and add.
💡 Tip: For combined stone and pounds: (stone × 6.35029) + (remaining lbs × 0.453592) = total kg. Example: 11 st 4 lbs = (11 × 6.35) + (4 × 0.454) = 69.85 + 1.81 = 71.67 kg.

Common Stone to Kilogram Conversions (Body Weights)

UK body weight ranges converted to metric for medical and fitness use.

StoneKilogram
7 st44.45 kg
9 st57.15 kg
10 st63.50 kg
11 st69.85 kg
12 st76.20 kg
14 st88.90 kg
16 st101.60 kg
20 st127.01 kg

Solved Examples: Stone to Kilograms

Question 1: Convert 13 stone 5 lbs to kilograms for a medical form.

Solution:

Stone portion: 13 × 6.35029 = 82.554 kg

Pounds portion: 5 × 0.453592 = 2.268 kg

Total: 82.554 + 2.268 = 84.822 kg

Answer: 13 st 5 lbs = 84.8 kg.

Question 2: A person weighs 10 stone. What is their weight in kg?

Solution:

Weight in kg = 10 × 6.35029

= 63.50 kg

Answer: 10 stone = 63.5 kg.

Question 3: Convert 15 stone 10 lbs to kg.

Solution:

Stone portion: 15 × 6.35029 = 95.254 kg

Pounds portion: 10 × 0.453592 = 4.536 kg

Total: 95.254 + 4.536 = 99.790 kg

Answer: 15 st 10 lbs = 99.8 kg.

Practice Questions: Stone to Kilograms

Try solving these on your own to test your understanding:

  1. Convert 8 stone to kg. (Answer: 50.80 kg)
  2. Express 11 st 7 lbs in kg. (Answer: 73.03 kg)
  3. Convert 14 stone to kg. (Answer: 88.90 kg)
  4. A person weighs 9 st 3 lbs. What is this in kg? (Answer: 58.51 kg)
  5. Convert 17 stone to kg. (Answer: 107.95 kg)

UK Body Weight Culture and the Stone

The UK and Ireland remain the only countries that commonly use stone for body weight in everyday conversation. "I weigh eleven stone" is normal British English, while Americans say pounds and most of the world uses kilograms. NHS health guidelines, UK diet plans, and British fitness magazines use stone. However, medical equipment (scales, BMI calculators) increasingly shows kg, requiring regular conversion.

BMI Calculation from Stone Weight

BMI = weight (kg) ÷ height (m)². To calculate BMI from stone: first convert to kg (stone × 6.35), then apply the formula. For example: 12 st (76.2 kg), 5'10" (1.778 m): BMI = 76.2 ÷ (1.778²) = 76.2 ÷ 3.16 = 24.1 (healthy range). UK NHS defines BMI ranges: <18.5 underweight, 18.5-24.9 healthy, 25-29.9 overweight, 30+ obese.

Key Takeaways

  • 1 stone = 6.35029 kg (14 lbs exactly).
  • UK and Ireland use stone for body weight in everyday conversation.
  • For stone + pounds: (st × 6.35) + (lbs × 0.454) = total kg.
  • NHS and medical forms increasingly require kg, making conversion necessary.
  • Average UK male: ~12 st (76 kg); average UK female: ~10 st (63.5 kg).
  • BMI calculation requires kg — always convert from stone first.

Stone to Kilogram Conversion Formula

kilogram = stone × 5.6699046

1 stone = 5.6699046 kilogram

1 kilogram = 0.1763698 stone

Reverse: stone = kilogram × 0.1763698

Frequently Asked Questions

How many kilogram are in 1 stone?

There are 5.6699046 kilogram in 1 stone. To convert stone to kilogram, multiply the value by 5.6699046.

How do I convert stone to kilogram?

Multiply your stone value by 5.6699046 to get the equivalent in kilogram. For example, 5 stone = 5 × 5.6699046 = 28.34952 kilogram.

How do I convert kilogram to stone?

Multiply your kilogram value by 0.1763698 to get the equivalent in stone. Alternatively, divide by 5.6699046.

What is 10 stone in kilogram?

10 stone is equal to 56.69905 kilogram.

What is 100 stone in kilogram?

100 stone is equal to 566.99046 kilogram.