Pounds to Kilograms
Convert pounds (lb) to kilograms (kg). 1 lb = 0.453592 kg (and 1 kg = 2.2046244 lb). It all runs locally in your browser.
Pounds to Kilograms table
| Pounds | Kilograms |
|---|---|
| 0.5 lb | 0.226796 kg |
| 1 lb | 0.453592 kg |
| 2 lb | 0.907184 kg |
| 3 lb | 1.360776 kg |
| 5 lb | 2.26796 kg |
| 10 lb | 4.53592 kg |
| 25 lb | 11.3398 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
Where this conversion shows up
US body weights, baggage allowances and gym equipment arrive in pounds and regularly need translating: airline limits like "50 lb per checked bag" become 23 kg on the same airline's metric pages, and every American recipe protein or dumbbell needs halving-ish to make sense in kilograms.
Worked example
The classic 50 lb checked-bag limit: 50 × 0.453592 = 22.7 kg — which is why international allowances say 23 kg. A US 45 lb barbell plate is 20.4 kg, just heavier than a metric 20 kg plate.
Rounding and precision
Halve it, then take off 10% of the result: 50 lb → 25 − 2.5 = 22.5 kg (exact: 22.7). Whole kilograms are fine for luggage; medicine dosing by body weight should use the exact factor 0.45359237.
How to convert
To convert pounds to kilograms, multiply by 0.453592. Need other units? Use the full Unit Converter.
FAQ
How many kilograms in a pound?
1 pound equals 0.453592 kilograms (kg).
How do I convert pounds to kilograms?
Multiply the pounds value by 0.453592. For example, 5 lb = 2.26796 kg.
Why do baggage limits say both 50 lb and 23 kg?
They are the same limit rounded for each audience: 50 lb is 22.68 kg, which airlines round to 23 kg. The pound figure is the stricter one in practice.
What is a healthy newborn weight in kilograms?
The often-quoted 7.5 lb average is 3.4 kg. The typical full-term range of 5.5–10 lb corresponds to about 2.5–4.5 kg.