Recent Conversions
Your recent conversions will appear here.
Pounds to Kilograms Conversion Information
Converting pounds (lb) to kilograms (kg) is a common conversion when working between imperial and metric systems. Pounds are widely used in the United States and some other countries, while kilograms are the standard unit in most of the world.
How to Convert Pounds to Kilograms
To convert pounds to kilograms, use the following formula:
kg = lb / 2.20462
Pounds to Kilograms Conversion Table
| Pounds (lb) | Kilograms (kg) | Common Reference |
|---|---|---|
| 1 lb | 0.45 kg | A football |
| 2 lb | 0.91 kg | A pineapple |
| 5 lb | 2.27 kg | A bag of flour |
| 10 lb | 4.54 kg | Average newborn baby |
| 20 lb | 9.07 kg | Car tire |
| 50 lb | 22.68 kg | Medium bag of dog food |
| 100 lb | 45.36 kg | A large adult dog |
| 150 lb | 68.04 kg | Average adult human |
Common Pound to Kilogram Conversions
- 1 lb = 0.453592 kg
- 10 lb = 4.53592 kg
- 50 lb = 22.6796 kg
- 100 lb = 45.3592 kg
About Pounds
The pound (lb) is a unit of weight in the imperial and US customary systems. It is defined as exactly 0.45359237 kilograms. The abbreviation "lb" comes from the Latin word "libra," an ancient Roman unit of measure.
About Kilograms
The kilogram (kg) is the base unit of mass in the International System of Units (SI). Originally defined as the mass of one liter of water at freezing point, it is now defined based on Planck's constant to ensure greater accuracy.
In everyday use, 1 kg is approximately equal to 2.2 pounds, which provides a quick way to make rough conversions.