Stone to Kilograms Converter (st to kg)
Convert stone to kilograms instantly - UK to metric conversion
Quick Answer
1 stone = 6.35029 kilograms
Common conversions: 8 st = 50.8 kg | 10 st = 63.5 kg | 12 st = 76.2 kg | 15 st = 95.3 kg
What is a Stone?
The stone (st) is a unit of weight used primarily in the United Kingdom and Ireland for measuring human body weight. One stone equals exactly 14 pounds or 6.35029318 kilograms. Despite the UK officially adopting the metric system, stone remains the preferred unit for expressing body weight in British culture, NHS medical records, and everyday conversation.
Conversion Formula
Kilograms = Stone × 6.35029
kg = st × 6.35029
Step-by-Step Examples:
Example 1: Convert 10 stone to kg
10 st × 6.35029 = 63.5029 kg
Answer: 10 stone equals approximately 63.5 kilograms
Example 2: Convert 12 stone to kg
12 st × 6.35029 = 76.2035 kg
Answer: 12 stone equals approximately 76.2 kilograms
Example 3: Convert 15 stone to kg
15 st × 6.35029 = 95.2544 kg
Answer: 15 stone equals approximately 95.3 kilograms
Stone to Kilograms Conversion Table
| Stone (st) | Kilograms (kg) | Stone (st) | Kilograms (kg) |
|---|---|---|---|
| 1 st | 6.35 kg | 10 st | 63.50 kg |
| 2 st | 12.70 kg | 11 st | 69.85 kg |
| 3 st | 19.05 kg | 12 st | 76.20 kg |
| 4 st | 25.40 kg | 13 st | 82.55 kg |
| 5 st | 31.75 kg | 14 st | 88.90 kg |
| 6 st | 38.10 kg | 15 st | 95.25 kg |
| 7 st | 44.45 kg | 16 st | 101.61 kg |
| 8 st | 50.80 kg | 17 st | 107.96 kg |
| 9 st | 57.15 kg | 20 st | 127.01 kg |
When Do You Need This Conversion?
1. UK to International Communication
When communicating weight with people outside the UK and Ireland, converting stone to kilograms helps ensure understanding. Most countries worldwide use kilograms as the standard unit for body weight, making this conversion essential for international contexts.
2. Medical & Healthcare Records
While the NHS in the UK often uses stone for patient communication, international medical forms, research studies, and medication dosing calculations typically require kilograms. Converting stone to kg ensures accurate medical documentation and treatment.
3. Fitness & Sports Applications
International fitness apps, gym equipment, and sports competitions usually display weights in kilograms. British athletes and fitness enthusiasts need to convert their stone measurements to kg for accurate tracking and international competition qualification.
4. Travel & Immigration
Visa applications, international travel forms, and foreign gym memberships often require weight in kilograms. Converting from stone helps UK residents complete these forms accurately.
5. Online Shopping & Product Specifications
International products, weight-bearing furniture, and equipment specifications are typically listed in kilograms. Understanding your weight in kg helps ensure products are suitable for your needs.
Common Stone to Kilograms Conversions
Frequently Asked Questions
How many kilograms are in a stone?
There are exactly 6.35029318 kilograms in 1 stone. For practical purposes, this is usually rounded to 6.35 kg.
How do I convert my weight from stone to kg?
Multiply your weight in stone by 6.35029. For example, if you weigh 12 stone: 12 × 6.35029 = 76.2 kg. You can use our converter above for instant results.
What is 10 stone in kg?
10 stone equals 63.5 kilograms (rounded to one decimal place). This is a common reference point for UK weight conversions.
Why does the UK use stone instead of kilograms?
Stone has been used in Britain since medieval times and remains culturally embedded despite official metrication. Many British people find stone more intuitive for body weight, and it's still standard in NHS consultations and everyday conversation.