Lbs to Kg Converter - Pounds to Kilograms
1 lb equals 0.453592 kg. Convert pounds and kilograms in either direction.
Weight Converter
Enter a value below to convert automatically.
1kg is about 2.2 lbs
US uses Pounds (lb), most others use Kilograms (kg).
Essential for gym plates or shipping weights.
Common pounds to kilograms conversions
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.45 kg |
| 10 lb | 4.54 kg |
| 20 lb | 9.07 kg |
| 45 lb | 20.41 kg |
| 50 lb | 22.68 kg |
| 100 lb | 45.36 kg |
| 150 lb | 68.04 kg |
| 200 lb | 90.72 kg |
| 225 lb | 102.06 kg |
| 300 lb | 136.08 kg |
| 400 lb | 181.44 kg |
Pounds conversion FAQ
How many kilograms is 1 pound?
One pound equals exactly 0.45359237 kilograms, commonly rounded to 0.454 kg.
How many kilograms is 45 pounds?
45 pounds is approximately 20.41 kg, a common gym plate marking in the US.
How many kilograms is 400 pounds?
400 pounds is approximately 181.44 kg.
Why use two weight units?
The Imperial System (lbs) is mainly used in the US, while the Metric System (kg) is the standard worldwide including Korea.
- 1 Kilogram (kg) = 2.20462 Pounds (lbs)
- 1 Pound (lb) = 0.453592 Kilograms (kg)
Gym Plate Weights (Common Conversions)
You will often encounter pound plates in overseas gyms or CrossFit boxes.
Olympic Barbell (Empty)
20 kg ≈ 44.1 lbs (Usually counted as 45lbs in US)
1 Plate (Blue)
20 kg ≈ 44 lbs / 45 lbs ≈ 20.4 kg