How to convert pounds to kilograms
- Type the value you want to convert.
- The result appears instantly. Use Swap units to reverse the direction.
- Choose other units from the lists if you need a different conversion.
Formula
kg = lb × 0.4536 and lb = kg × 2.2046.
Examples
25 lb = 11.3398 kg. 100 lb = 45.3592 kg. 150 lb = 68.0389 kg.
Quick reference table
| lb | kg |
|---|---|
| 1 lb | 0.4536 kg |
| 5 lb | 2.268 kg |
| 10 lb | 4.5359 kg |
| 25 lb | 11.3398 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
| 120 lb | 54.4311 kg |
| 150 lb | 68.0389 kg |
| 180 lb | 81.6466 kg |
| 200 lb | 90.7185 kg |
And the other way: kg to lb
| kg | lb |
|---|---|
| 1 kg | 2.2046 lb |
| 5 kg | 11.0231 lb |
| 10 kg | 22.0462 lb |
| 25 kg | 55.1156 lb |
| 50 kg | 110.2311 lb |
| 100 kg | 220.4623 lb |
When you need this conversion
Recipes, fitness plans, shipping labels and body-weight goals from the USA are often written in pounds. Converting to kilograms lets you compare them with metric scales, product labels and medical or fitness advice from other countries.
Frequently asked questions
How many kg is 1 lb?
1 lb equals 0.4536 kg. In the other direction, 1 kg equals 2.2046 lb.
How many kilograms is 150 lbs?
150 lb is 68.0389 kg.
What is the formula to convert pounds to kilograms?
Multiply the number of lb by 0.4536 to get kg. To go back, multiply kg by 2.2046.
Is this converter free and private?
Yes. It is free, needs no sign-up and runs in your browser, so the numbers you enter are not sent anywhere.
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Last updated: November 6, 2026