Kilograms to Stones Converter

Convert between kilograms and stones for body weight and UK measurements

Weight Conversion Calculator

kg

Metric unit of mass (1 kg = 1000 grams)

st

Imperial unit of weight (1 stone = 14 pounds)

Conversion Result

0.00 kg
Kilograms
0.00 st
Stones

Conversion factor: 1 kilogram = 0.157473 stones

Formula: stones = kilograms × 0.157473

🏥 Health & Medical

Convert body weight for UK medical records and health assessments

💪 Fitness & Sports

Track weight loss/gain in stones as used in UK fitness programs

📋 Personal Records

Convert between metric and imperial weight measurements

Common Kg to Stones Conversions

KilogramsStonesDescription
50 kg7.87 st50 kg (average child)
60 kg9.45 st60 kg (average adult female)
70 kg11.02 st70 kg (average adult male)
80 kg12.60 st80 kg
90 kg14.17 st90 kg
100 kg15.75 st100 kg
120 kg18.90 st120 kg
150 kg23.62 st150 kg

Quick Reference

1 kg0.157 st
1 stone6.35 kg
1 stone = 14 pounds
1 kg = 2.205 pounds

Measurement Systems

Metric System

  • • Kilogram (kg) - base unit
  • • Used worldwide
  • • Scientific standard
  • • Decimal-based system

Imperial System

  • • Stone (st) - traditional unit
  • • Used in UK & Ireland
  • • 1 stone = 14 pounds
  • • Common for body weight

Conversion Tips

1 kg ≈ 0.16 stones is a good approximation for quick estimates

Stones are commonly used in UK for body weight measurements

For precise conversions, use factor 0.157473 (kg to stones)

Remember: 1 stone = 14 pounds exactly

Understanding Kilograms and Stones

What is a Kilogram?

The kilogram (kg) is the base unit of mass in the International System of Units (SI). It's widely used around the world for scientific, commercial, and everyday measurements. The kilogram provides precise and standardized weight measurements.

Common Kilogram Uses

  • Medical and healthcare measurements
  • International sports and fitness
  • Scientific research and laboratories
  • Food packaging and nutrition

What is a Stone?

The stone (st) is a traditional unit of weight used primarily in the United Kingdom and Ireland. One stone equals exactly 14 pounds. It's commonly used for measuring human body weight and is deeply ingrained in British culture.

Conversion Formulas

Stones = Kilograms × 0.157473

Kilograms = Stones × 6.35029

Historical Note: The stone was originally based on the weight of actual stones used as standards, but is now standardized at exactly 14 pounds.