To convert pounds (lbs) to kilograms (kg), you can use the following step-by-step instructions:

Step 1: Understand the conversion factor

1 lb is equal to approximately 0.45359237 kg. This is the conversion factor we will use to convert pounds to kilograms.

Step 2: Set up the conversion equation

To convert 128 lbs to kg, we can set up the equation as follows:

128 lbs * (0.45359237 kg/1 lb)

Step 3: Cancel out the units

In the equation, the unit “lbs” appears in both the numerator and denominator, so we can cancel it out. We are left with:

128 * 0.45359237 kg

Step 4: Perform the calculation

Multiply 128 by 0.45359237 to get the result:

128 * 0.45359237 = 58.05967776 kg

Step 5: Round the answer (if necessary)

Since weight is often rounded to a certain number of decimal places, you may choose to round the answer. In this case, rounding to two decimal places gives us:

58.06 kg

Therefore, 128 lbs is approximately equal to 58.06 kg.