lb vers kg convertisseur - Livre vers Kilogramme

Conversion derivation

Express both lb and kg in the same base unit kg (kilogram), then cancel the shared base unit.

1. 1

   Rewrite lb in the base unit

   $$1\mathrm{lb}=0.45359237\mathrm{kg}$$
2. 2

   Rewrite kg in the base unit

   $$1\mathrm{kg}=1\mathrm{kg}$$
3. 3

   Forward conversion

   $$\begin{array}{rl}1\mathrm{lb}& =\frac{0.45359237\cancel{\mathrm{kg}}}{1\cancel{\mathrm{kg}}}\times 1\mathrm{kg}\\ & =\frac{0.45359237}{1}\mathrm{kg}\\ & =0.45359237\mathrm{kg}\end{array}$$
4. 4

   Reverse conversion

   $$\begin{array}{rl}1\mathrm{kg}& =\frac{1\cancel{\mathrm{kg}}}{0.45359237\cancel{\mathrm{kg}}}\times 1\mathrm{lb}\\ & =\frac{1}{0.45359237}\mathrm{lb}\\ & =2.20462262185\mathrm{lb}\end{array}$$