Stones to Kg Converter

Convert stones and optional pounds into kilograms instantly with accurate, real-time results. Perfect for UK body weight and everyday weight conversions.

st
lb
Converted Weight
0.00
Kilograms (kg)

Popular Stone to Kg Conversions

Quick Conversion Reference

  • 1 stone = 14 pounds
  • 1 stone = 6.35029318 kilograms
  • 1 pound = 0.45359237 kilograms

Common Stones to Kg Conversions

Below are some of the most common stone-to-kilogram conversions. Use these quick reference cards for an instant answer, or enter any value into the calculator above for a precise result.

3 Stone
↓
19.05 kg
3 st × 6.35029
5 Stone
↓
31.75 kg
5 st × 6.35029
7 Stone
↓
44.45 kg
7 st × 6.35029
10 Stone
↓
63.50 kg
10 st × 6.35029
11 Stone
↓
69.85 kg
11 st × 6.35029
12 Stone
↓
76.20 kg
12 st × 6.35029
14 Stone
↓
88.90 kg
14 st × 6.35029
16 Stone
↓
101.60 kg
16 st × 6.35029
18 Stone
↓
114.30 kg
18 st × 6.35029
20 Stone
↓
127.01 kg
20 st × 6.35029

What Is a Stones to Kg Converter?

A stones to kg converter changes stones and pounds into kilograms instantly, so you can get an accurate weight conversion without doing the calculation yourself. Enter your stone value, add any extra pounds, and the calculator provides the kilogram result automatically.

This converter is useful because weight is measured differently around the world. In the UK and Ireland, body weight is often given in stones and pounds, while kilograms are the standard unit in most countries. Converting between the two can be helpful when comparing weight records, using fitness apps, following a nutrition plan, or sharing measurements internationally.

Our converter keeps the process simple. Enter the number of stones and, if needed, enter the remaining pounds. The calculator uses the standard conversion values to calculate the result automatically, so you don’t need to remember formulas or perform manual multiplication.

You can use it for everyday weight checks, fitness tracking, healthcare records, travel documents, or international forms. It can also be useful for students, coaches, and anyone who regularly works with different weight units.

Stones to KG Converter

Along with the calculator, this page provides conversion tables, common examples, step-by-step calculations, and helpful FAQs. Whether you’re converting a whole number of stones or a value such as 12 st 5 lb, you can quickly find the equivalent weight in kilograms.

How to Use Our Stones to Kg Converter

Convert stones to kilograms in seconds. Enter your stones, add any remaining pounds, and the calculator automatically shows your weight in kilograms.

1

Enter Your Weight in Stone

Enter the number of stones (st) in the first field. Use a whole or decimal value depending on how your weight is recorded.

Example:
Enter 10 st.
2

Add Remaining Pounds

If your weight includes extra pounds, enter them in the optional pounds (lb) field. Leave it empty when you only have a stone value.

Example:
Enter 10 st 8 lb.
3

View Your Kilogram Result

Your result appears automatically as you type. You can copy the kilogram value, reset the calculator, or enter another weight immediately.

Example:
10 st 8 lb ≈ 67.13 kg

Stones to Kilograms Conversion Formula

The standard formulas below show exactly how to convert stones, or stones and pounds, into kilograms. They are useful when you want to check a calculator result or work out a conversion manually.

Stone to Kilograms Formula

Formula
Kilograms = Stones × 6.35029
Worked Example
Convert 10 stone to kilograms

Step 1: Write the formula
10 × 6.35029

Step 2: Multiply
10 × 6.35029 = 63.50 kg
Answer: 10 stone = 63.50 kg

Stone and Pounds to Kilograms Formula

Formula
Kilograms = (Stones × 14 + Pounds) × 0.453592
Worked Example
Convert 10 st 8 lb to kilograms

Step 1: Convert stones into pounds
10 × 14 = 140 lb

Step 2: Add the remaining pounds
140 + 8 = 148 lb

Step 3: Convert pounds to kilograms
148 × 0.453592 = 67.13 kg
Answer: 10 st 8 lb ≈ 67.13 kg

Stones to Kg Conversion Chart

Use this quick conversion chart to find the kilogram equivalent for common stone values. Search the table to quickly locate a specific weight.

Stone (st) Kilograms (kg)
1 Stone6.35 kg
2 Stone12.70 kg
3 Stone19.05 kg
4 Stone25.40 kg
5 Stone31.75 kg
6 Stone38.10 kg
7 Stone44.45 kg
8 Stone50.80 kg
9 Stone57.15 kg
10 Stone63.50 kg
11 Stone69.85 kg
12 Stone76.20 kg
13 Stone82.55 kg
14 Stone88.90 kg
15 Stone95.25 kg
16 Stone101.60 kg
17 Stone107.95 kg
18 Stone114.30 kg
19 Stone120.66 kg
20 Stone127.01 kg
21 Stone133.36 kg
22 Stone139.71 kg
23 Stone146.06 kg
24 Stone152.41 kg
25 Stone158.76 kg
26 Stone165.11 kg
27 Stone171.46 kg
28 Stone177.81 kg
29 Stone184.16 kg
30 Stone190.51 kg
31 Stone196.86 kg
32 Stone203.21 kg
33 Stone209.56 kg
34 Stone215.91 kg
35 Stone222.26 kg
36 Stone228.61 kg
37 Stone234.96 kg
38 Stone241.31 kg
39 Stone247.66 kg
40 Stone254.01 kg
41 Stone260.36 kg
42 Stone266.71 kg
43 Stone273.06 kg
44 Stone279.41 kg
45 Stone285.76 kg
46 Stone292.11 kg
47 Stone298.46 kg
48 Stone304.81 kg
49 Stone311.16 kg
50 Stone317.51 kg

How to Convert Stone to Kilograms

You can convert stone to kilograms by multiplying the number of stones by 6.35029318. The result gives the equivalent weight in kilograms, so you can calculate the conversion manually whenever you need it.

1

Multiply the Stones by 6.35029318

Take your weight in stones and multiply it by the standard conversion factor 6.35029318. This converts the stone measurement into kilograms.

Kilograms = Stones × 6.35029318
2

Round the Result

The multiplication may produce several decimal places. For most everyday conversions, rounding the result to two decimal places makes the answer easier to read while keeping useful precision.

Result ≈ Kilograms (kg)

Worked Example: 12 Stone to Kg

Starting weight: 12 stone

Step 1: Use the conversion formula.
12 × 6.35029318

Step 2: Multiply.
12 × 6.35029318 = 76.20351816 kg

Step 3: Round to two decimal places.
76.20351816 ≈ 76.20 kg
✅ 12 Stone = 76.20 Kilograms

How to Convert Stone and Pounds to Kilograms

If your weight is written as stones and pounds, you first need to combine both values into a single weight in pounds. Once you have the total number of pounds, multiply it by 0.453592 to convert the result into kilograms. Following these simple steps ensures an accurate conversion every time.

1

Convert All Stones into Pounds

Each stone contains 14 pounds. Multiply the number of stones by 14 to find the total pounds from the stone value.

Stones × 14
2

Add the Remaining Pounds

If your weight includes extra pounds, add them to the total pounds calculated in the first step. This gives your complete weight in pounds.

Total Pounds = (Stones × 14) + Pounds
3

Convert Pounds to Kilograms

Multiply the total number of pounds by 0.453592. The final value is your weight in kilograms.

Kilograms = Total Pounds × 0.453592

Worked Example

Convert 10 st 8 lb to kilograms

Step 1: Convert stones into pounds.
10 × 14 = 140 lb

Step 2: Add the remaining pounds.
140 + 8 = 148 lb

Step 3: Convert pounds to kilograms.
148 × 0.453592 = 67.13 kg
✅ 10 st 8 lb = 67.13 kg

Conclusion

Converting stones to kilograms is simple: multiply the number of stones by 6.35029318. If your weight includes extra pounds, those pounds can also be included for a more precise kilogram result.

Our Stones to Kg Converter handles the calculation for you. Enter your stones, add any remaining pounds, and the tool instantly shows the equivalent weight in kilograms using the standard conversion values. This saves time and avoids mistakes from manual calculations.

The page also includes the conversion formula, worked examples, common stone-to-kg values, and a searchable conversion chart. So whether you need to convert 10 stone, 12 stone, 14 stone, or a custom weight, you can quickly check the result and understand how the calculation works.

If you regularly switch between imperial and metric measurements, keep this page handy for quick conversions. You can also use our related tools to convert kilograms to stones, stones to pounds, or kilograms to pounds without doing the maths yourself.

Our aim is to provide clear, accurate, and easy-to-use weight converters that give you the answer you need without unnecessary steps.

Frequently Asked Questions

Find quick answers to the most common questions about converting stones to kilograms, understanding weight units, and using our online converter.

One stone is exactly 6.35029 kilograms. This official conversion value is used worldwide for converting stone into the metric system.
7 stone equals approximately 44.45 kilograms. Entering 7 into the converter will instantly display the same result without any manual calculations.
10 stone is equal to approximately 63.50 kilograms. This is one of the most commonly searched body weight conversions.
Yes. Enter both the stone value and any remaining pounds into the converter. It combines the two measurements and calculates the equivalent weight in kilograms instantly.
The kilogram is the standard unit of mass in the International System of Units (SI). It is widely used in healthcare, science, education, sports, and everyday measurements across most countries.
Yes. Stone remains a common unit for measuring body weight in the United Kingdom and Ireland, while kilograms are also widely used in medical settings and fitness applications.
The standard formula is:

Kilograms = Stones × 6.35029

If you have stones and pounds, first convert the stones into pounds, add the remaining pounds, and then multiply the total by 0.453592.
The converter uses internationally accepted conversion factors and performs calculations automatically. Results are rounded for easier reading while remaining accurate for everyday, fitness, and healthcare use.