Stone to KG Converter
Convert stone and pounds to kilograms with our free online tool. Popular in the UK and Ireland for body weight measurement. Enter your weight in stone and pounds, and get the exact value in kilograms instantly.
How to Convert Stone to Kilograms
Converting stone to kilograms is simple: 1 stone (st) equals 6.35029318 kilograms (kg). To convert, multiply the number of stones by 6.35029318. If you have pounds as well, first convert stone to pounds (1 st = 14 lb), add the extra pounds, then multiply by 0.45359237 to get kilograms.
Example: 10 stone 5 pounds = (10 × 14 + 5) = 145 pounds × 0.45359237 = 65.77 kg. Or simply: 10 stone × 6.35 = 63.5 kg, plus 5 lb × 0.454 = 2.27 kg, total = 65.77 kg.
Why Use This Converter?
Our Stone to KG converter is designed for speed and accuracy. Whether you're tracking your body weight, converting health records, or just curious about your weight in kilograms, this tool gives you instant, precise results. No need to memorize formulas — just enter your stone and pounds and click convert.
Understanding the Stone Unit
The stone is a unit of weight equal to 14 pounds or approximately 6.35 kilograms. It originated in England and is still widely used in the UK and Ireland for measuring human body weight. It provides a convenient middle-ground between pounds and kilograms, making it easier to express weights in whole numbers.
Common Uses for Stone to KG Conversion
- Body Weight: Used in the UK and Ireland for personal weight tracking.
- Health Records: Converting weight for medical records and BMI calculations.
- Fitness & Wellness: Tracking weight loss or gain in different units.
- Travel: Converting luggage weight from stone to kilograms for airline requirements.
How Accurate Is This Converter?
This converter uses the exact conversion factor 1 stone = 6.35029318 kg and supports decimal values for high precision. All calculations are performed using JavaScript's number system, which handles floating-point arithmetic accurately. For most practical purposes, the result is accurate to within a few decimal places.
Frequently Asked Questions
There are exactly 6.35029318 kilograms in 1 stone. For everyday use, 1 stone is approximately 6.35 kg. To convert stone to kilograms, multiply the number of stones by 6.35.
To convert stone and pounds to kg, first convert the stone to pounds (1 stone = 14 pounds), add the extra pounds, then multiply by 0.45359237. For example, 10 stone 5 pounds = (10 × 14 + 5) = 145 pounds × 0.45359237 = 65.77 kg.
The stone is a traditional British unit of weight still commonly used in the UK and Ireland for measuring body weight. It provides a convenient middle-ground between pounds and kilograms for human weight measurement.
This converter is designed for stone to kg. If you need to convert kg to stone, divide the kilogram value by 6.35029318. For example, 70 kg ÷ 6.35 = 11.02 stone (approximately 11 stone).
The formula is: kilograms = stone × 6.35029318. If you have pounds as well, use: kilograms = (stone × 14 + pounds) × 0.45359237.
Yes, the stone remains the most common unit for measuring body weight in the UK and Ireland, especially among older generations. However, kilograms are increasingly used in medical settings and by younger people.