Weight Calculator
Convert between weight units like Kilograms (kg), Pounds (lbs), Stones (st), and Ounces (oz) instantly. Useful for health tracking, cooking, and science.
Common Weight Conversions
- 1 Kilogram (kg) = 2.20462 Pounds (lbs)
- 1 Pound (lb) = 16 Ounces (oz)
- 1 Stone (st) = 14 Pounds (lbs)
- 1 Metric Ton (t) = 1,000 Kilograms (kg)
Why is 'Stone' used?
The stone (st) is an imperial unit of mass equal to 14 pounds. It is commonly used in the United Kingdom and Ireland for measuring body weight. For example, someone who weighs 170 lbs might say they are "12 stone 2".
Mass vs. Weight
Technically, kilograms measure mass (amount of matter), while pounds can measure both mass and force (weight). On Earth, the distinction is usually ignored for daily purposes, but in physics, weight depends on gravity.
? Frequently Asked Questions
A quick rough estimate is to multiply the kg by 2 and add 10%. For example, 50kg * 2 = 100 + 10% = 110 lbs. (Actual is 110.23 lbs).
A 'ton' usually refers to the US Short Ton (2,000 lbs). A 'tonne' (or metric ton) is 1,000 kg (approx 2,204 lbs). The metric tonne is slightly heavier.
There are approximately 28.35 grams in one ounce.