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 120 pounds into kilograms we have to multiply 120 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

120 lb → M_(kg)

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

M_(kg) = 120 lb × 0.45359237 kg

M_(kg) = 54.4310844 kg

The final result is:

120 lb → 54.4310844 kg

We conclude that 120 pounds is equivalent to 54.4310844 kilograms:

120 pounds = 54.4310844 kilograms

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilogram is equal to 0.018371855182073 × 120 pounds.

Another way is saying that 120 pounds is equal to 1 ÷ 0.018371855182073 kilograms.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one hundred twenty pounds is approximately fifty-four point four three one kilograms:

120 lb ≅ 54.431 kg

An alternative is also that one kilogram is approximately zero point zero one eight times one hundred twenty 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