Converting Kilograms (kg) to Stones (st) is a unique requirement primarily for the UK and Ireland. While most of the world uses Kilograms or Pounds for body weight, the “Stone” (equal to 14 pounds) remains the standard unit for weighing people in British culture. Whether you are tracking weight loss or converting medical records, this tool helps bridge the gap between the metric system and traditional imperial measurements.
Master Weight Converter
The Formula
Divide the Kilograms by 6.35029:
kg ÷ 6.35029 = st
Example
If a person weighs 70 kg:
70 ÷ 6.35029 = 11.02 st
British Body Weight & Metric Insights
The most accurate way to find your weight in stones is to divide your kilograms by 6.35. This helps you translate your metric weight into the traditional British format.
Frequently Asked Questions
One kilogram is equivalent to about 0.15747 stones. Because a stone is a much larger unit, your weight in stones will always be a much smaller number than your weight in kilograms. For most people, a weight of 70kg translates to roughly 11 stone.
For a fast mental calculation, divide the kilograms by 6. If you weigh 72kg, dividing by 6 gives you 12 stone. This isn’t perfectly exact (the real number is 11.3st), but it’s a great way to get a “ballpark” figure while at the gym or the doctor’s office.
While the UK has officially adopted the metric system for many things, the Stone remains the cultural standard for personal body weight. Using stones and pounds allows people to use smaller, more manageable numbers—similar to how we use “feet” instead of “inches” for height.