Enter a number
1 lb = 0.45359237 kg
Open in Unit ConverterFormula
kg = lb × 0.45359237
How to convert
To convert pounds to kilograms, multiply the value by 0.45359237. For example, 2 lb = 0.90718474 kg.
Conversion table
| lb | kg |
|---|---|
| 1 lb | 0.45359237 kg |
| 2 lb | 0.90718474 kg |
| 5 lb | 2.26796185 kg |
| 10 lb | 4.5359237 kg |
| 20 lb | 9.0718474 kg |
| 50 lb | 22.6796185 kg |
| 100 lb | 45.359237 kg |
| 150 lb | 68.0388555 kg |
| 180 lb | 81.6466266 kg |
| 200 lb | 90.718474 kg |
| 250 lb | 113.3980925 kg |
About these units
The kilogram is the SI unit of mass, and 1 kg = 1,000 g. The international avoirdupois pound is defined as exactly 0.45359237 kg, an ounce is 1/16 pound (28.349523125 g), and a stone, still common for body weight in the UK and Ireland, is 14 pounds (6.35029318 kg). Troy ounces, used for precious metals, are heavier (31.1035 g) and are not used here.
FAQ
› How do I convert lb to kg?
1 lb = 0.45359237 kg. To convert, multiply the value by 0.45359237: 2 lb = 0.90718474 kg.
› What is 1 kg in lb?
1 kg = 2.204622622 lb. The reverse formula is lb = kg ÷ 0.45359237.
› How many pounds are in a kilogram?
1 kg is about 2.20462 lb. For a quick estimate, double the kilograms and add 10%.
› Is a fluid ounce the same as an ounce?
No. An ounce (oz) measures weight and a fluid ounce (fl oz) measures volume. They only roughly match for water.