Convert pounds (lb) to kilograms, grams, ounces, stones, and other mass units.
Calculator
The pound (lb) is a unit of mass in the British Imperial system. The international avoirdupois pound is exactly 0.45359237 kg, used in the US, the UK, and several other countries for weighing people, groceries, and freight.
Common Pound Conversions
- 1 lb = 453.592 g — exact value by definition.
- 1 lb ≈ 0.4536 kg — divide by 2.205 to convert to kilograms.
- 1 lb = 16 oz — one pound equals sixteen ounces.
- 1 lb ≈ 0.0714 st — multiply by 0.0714 to convert to stones.
- 1 lb ≈ 0.000454 t — multiply by 0.000454 to convert to metric tons.
In the US, pounds are the primary unit of mass in everyday life — used on bathroom scales, food labels, and medical records. In most other countries kilograms are the standard, making pounds to kg one of the most common mass conversions.