How do you convert 139 lbs to kg?

 To convert pounds (lbs) to kilograms (kg), you need to use the conversion factor where 1 pound is approximately equal to 0.453592 kilograms.

Formula:

$$\text{kilograms}=\text{pounds}\times 0.453592$$

Example:

To convert 139 lbs to kilograms, you simply multiply 139 by 0.453592:

$$139\text{lbs}\times 0.453592=63.502\text{kg}$$

So, 139 lbs is approximately 63.5 kg.