Conversion formula

The conversion factor from ounces to kilograms is 0.028349523125, which means that 1 ounce is equal to 0.028349523125 kilograms:

1 oz = 0.028349523125 kg

To convert 40 ounces into kilograms we have to multiply 40 by the conversion factor in order to get the mass amount from ounces to kilograms. We can also form a simple proportion to calculate the result:

1 oz → 0.028349523125 kg

40 oz → M_(kg)

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

M_(kg) = 40 oz × 0.028349523125 kg

M_(kg) = 1.133980925 kg

The final result is:

40 oz → 1.133980925 kg

We conclude that 40 ounces is equivalent to 1.133980925 kilograms:

40 ounces = 1.133980925 kilograms

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilogram is equal to 0.88184904873951 × 40 ounces.

Another way is saying that 40 ounces is equal to 1 ÷ 0.88184904873951 kilograms.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that forty ounces is approximately one point one three four kilograms:

40 oz ≅ 1.134 kg

An alternative is also that one kilogram is approximately zero point eight eight two times forty ounces.

Conversion table

ounces to kilograms chart

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