Unit Conversions
Kilograms vs Pounds: Everything You Need to Know
Learn the exact conversion between kilograms and pounds, with practical examples for body weight, grocery shopping, and shipping.
Weight is one of the most frequently converted measurements in daily life. Whether you're reading a recipe, shipping a package, tracking your body weight, or following a fitness plan from another country, kg-to-lbs conversion comes up constantly.
The Conversion Factor
1 kilogram = 2.20462 pounds. 1 pound = 0.453592 kilograms. These are exact by international agreement. The kilogram is the SI base unit of mass; the pound is defined in terms of the kilogram.
Common Body Weight References
- 50 kg = 110.2 lbs
- 60 kg = 132.3 lbs
- 70 kg = 154.3 lbs
- 80 kg = 176.4 lbs
- 90 kg = 198.4 lbs
- 100 kg = 220.5 lbs
Quick Mental Math
To convert kg to lbs in your head: multiply by 2, then add 10% of the result. For 70 kg: 70 × 2 = 140, then add 14 (10% of 140) = 154 lbs. The exact answer is 154.3 — close enough for most purposes.
Stone: The Third Weight Unit
In the UK and Ireland, body weight is often expressed in stone and pounds. 1 stone = 14 pounds = 6.35 kg. Someone who weighs '11 stone 4' weighs 158 pounds or about 71.7 kg. Stone is rarely used outside of these countries but comes up in British media and fitness content.