Free Kg to Stone Converter | Stone to Kg Calculator
Convert kilograms to stone and pounds, or stone to kilograms instantly. Accurate weight conversion with detailed tables and formulas.
About Weight Conversion
Weight conversion between kilograms (kg), stone (st), and pounds (lb) is essential for international communication, health monitoring, and various professional applications. Our converter provides accurate, instant results for all your conversion needs.
The stone is primarily used in the UK and Ireland for measuring body weight, while kilograms are the standard metric unit used globally. Understanding these conversions helps bridge the gap between metric and imperial measurement systems.
Conversion Theory & Formulas
Kg to Stone
1 kg = 2.20462 pounds
1 stone = 14 pounds
1 kg = 0.157473 stone
Calculation Steps
1. Convert kg to pounds: kg × 2.20462
2. Convert pounds to stone: pounds ÷ 14
3. Get remainder: pounds mod 14
Example: Convert 70 kg to stone
Step 1: 70 kg × 2.20462 = 154.32 pounds
Step 2: 154.32 ÷ 14 = 11.02 stone
Result: 11 stone 0.3 pounds or 11 stone 0 lb 5 oz
Learn More About Weight Units
Historical Background
The stone as a unit of weight has been used in Britain since the 14th century. It was officially standardized at 14 pounds in 1985 by the UK Weights and Measures Act.
While most countries use the metric system (kilograms), the UK and Ireland continue to use stone for measuring body weight in everyday contexts.
Practical Applications
- Medical & Health: BMI calculations, medication dosing, health records
- Sports & Fitness: Weight categories in boxing, wrestling, and martial arts
- Travel & Immigration: Converting weight for international documents
- Daily Life: Shopping, cooking, and personal weight tracking
International Standards
Our conversion factors are based on internationally accepted standards: ISO 80000-3 (International System of Units) and the UK Weights and Measures Act 1985. The conversion factor 1 pound = 0.45359237 kg is exact by definition.
Kg to Stone Converter FAQ - Common Questions
How many kg to 1 stone?
1 stone equals 6.35029 kilograms (kg). This is the standard conversion factor used internationally for precise weight conversions between the imperial stone unit and the metric kilogram unit. A stone is primarily used in the UK and Ireland for measuring body weight.
Also answers: How many kg to a stone?, What is 1 stone equal to in kg?
How do you convert kg to stones?
To convert kilograms to stones, divide the number of kilograms by 6.35029. For example, to convert 70 kg to stones: 70 ÷ 6.35029 = 11.0231 stones. Our tool provides real-time conversion as you type, making it quick and easy.
Also answers: How to convert kg to stone?, How do you convert kg to stone?, How to change kg to stones?
What is kg to stone?
Kg to stone is a weight unit conversion from the metric system (kilograms) to the imperial system (stones). 1 stone = 6.35029 kg. This conversion is commonly used in the UK and Ireland for measuring body weight.
How do you convert stone to kg?
To convert stone to kg, multiply the number of stones by 6.35029. For example, 10 stones × 6.35029 = 63.5029 kg. This is the reverse of the kg to stone conversion. Our converter provides this calculation instantly with customizable precision.
Also answers: How to convert stone into kg?, How to convert stone to kg?
Why is my result different from what I expected?
Please check that you have selected the correct units and precision settings. Our conversion is based on the international standard formula to ensure accuracy.
What is the relationship between stones and pounds?
1 stone equals 14 pounds. Our tool displays both stones and pounds in the result for your convenience.
Does this tool support decimal input?
Yes, you can enter any decimal number. You can also set the precision for the displayed result.
Does the conversion require an internet connection?
Once the page is loaded, the core conversion function works offline without requiring an internet connection.
How accurate is this conversion tool?
Our tool uses the standard conversion factor of 1 stone = 6.35029 kg, which is the internationally accepted value for precise weight conversions.
Can I use this tool on mobile devices?
Yes, our tool is fully responsive and works perfectly on all mobile devices, tablets, and desktop computers.