Convert pound to kilogram
Facts about the Pound
The pound is a unit of mass in the imperial and U.S. customary systems, defined as exactly 0.45359237 kilograms.
The term 'pound' comes from the Roman 'libra', which is also the source of its abbreviation 'lb'. The U.S. and British versions have historically differed, but both now define the pound as 0.45359237 kg.
Widely used in the U.S. and U.K. to measure body weight, groceries, and goods. It's also common in aviation, freight, and postal services.
1 lb = 16 oz = 0.453592 kg
Conversion Table
| From | To | Value |
|---|---|---|
| 1 lb | kg | 0.453592 |
| 1 lb | oz | 16 |
| 1 lb | g | 453.592 |
Facts about the Kilogram
The kilogram is the SI base unit of mass, defined by taking the fixed numerical value of Planck’s constant (h) as 6.62607015×10⁻³⁴ J·s.
The kilogram was initially defined as the mass of one liter of water. Later, it was physically represented by a platinum-iridium cylinder stored in France. In 2019, it was redefined in terms of fundamental constants of physics, making it more stable and universally applicable.
Kilograms are used globally for weighing people, luggage, industrial goods, grocery items, and shipping cargo. It’s the most widely recognized mass unit across both scientific and everyday contexts.
1 kg = 1000 g = 2.20462 lb = 35.274 oz
Conversion Table
| From | To | Value |
|---|---|---|
| 1 kg | g | 1000 |
| 1 kg | lb | 2.20462 |
| 1 kg | oz | 35.274 |