## Conversion formula

The conversion factor from pounds to kilograms is 0.45359237, which means that 1 pound is equal to 0.45359237 kilograms:

1 lb = 0.45359237 kg

To convert 4.5 pounds into kilograms we have to multiply 4.5 by the conversion factor in order to get the mass amount from pounds to kilograms. We can also form a simple proportion to calculate the result:

1 lb → 0.45359237 kg

4.5 lb → M(kg)

Solve the above proportion to obtain the mass M in kilograms:

M(kg) = 4.5 lb × 0.45359237 kg

M(kg) = 2.041165665 kg

The final result is:

4.5 lb → 2.041165665 kg

We conclude that 4.5 pounds is equivalent to 2.041165665 kilograms:

4.5 pounds = 2.041165665 kilograms

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilogram is equal to 0.48991613818862 × 4.5 pounds.

Another way is saying that 4.5 pounds is equal to 1 ÷ 0.48991613818862 kilograms.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four point five pounds is approximately two point zero four one kilograms:

4.5 lb ≅ 2.041 kg

An alternative is also that one kilogram is approximately zero point four nine times four point five pounds.

## Conversion table

### pounds to kilograms chart

For quick reference purposes, below is the conversion table you can use to convert from pounds to kilograms

pounds (lb) kilograms (kg)
5.5 pounds 2.495 kilograms
6.5 pounds 2.948 kilograms
7.5 pounds 3.402 kilograms
8.5 pounds 3.856 kilograms
9.5 pounds 4.309 kilograms
10.5 pounds 4.763 kilograms
11.5 pounds 5.216 kilograms
12.5 pounds 5.67 kilograms
13.5 pounds 6.123 kilograms
14.5 pounds 6.577 kilograms