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 2.5 lbs to kg, we can set up the equation as follows:

2.5 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. This allows us to cancel out the unit and only keep the desired unit “kg”.

Step 4: Perform the calculation

Multiply the numerical value of 2.5 lbs by the conversion factor of 0.45359237 kg/lb:

2.5 * 0.45359237 = 1.133980925 kg

Step 5: Round the result (if necessary)

Depending on the desired level of precision, you may need to round the result. In this case, the result is already rounded to 9 decimal places, so we can leave it as 1.133980925 kg.

Therefore, 2.5 lbs is approximately equal to 1.133980925 kg.