## Explanation

### Converting Pounds to Kilograms

### Step-by-Step Process

To convert pounds (lbs) to kilograms (kg), you can use the conversion factor. The standard factor to convert from pounds to kilograms is:

$1 \, \text{lb} = 0.45359237 \, \text{kg}$### Applying the Conversion Factor

For 140 lbs to kg, we use the formula:

$\text{Weight in kg} = \text{Weight in lbs} \times 0.45359237$### Calculation

Substituting 140 lbs into the formula:

$140 \, \text{lbs} \times 0.45359237 \, \text{kg/lb} = 63.5029318 \, \text{kg}$### Result

**140 lbs is approximately 63.5 kg**

This conversion can be handy for various applications, including fitness tracking, international travel, and scientific measurements. Always remember to use the precise conversion factor to ensure accuracy.