Conversion formula

The conversion factor from cups to cubic inches is 14.437499999968, which means that 1 cup is equal to 14.437499999968 cubic inches:

1 cup = 14.437499999968 in3

To convert 18 cups into cubic inches we have to multiply 18 by the conversion factor in order to get the volume amount from cups to cubic inches. We can also form a simple proportion to calculate the result:

1 cup → 14.437499999968 in3

18 cup → V_(in3)

Solve the above proportion to obtain the volume V in cubic inches:

V_(in3) = 18 cup × 14.437499999968 in3

V_(in3) = 259.87499999943 in3

The final result is:

18 cup → 259.87499999943 in3

We conclude that 18 cups is equivalent to 259.87499999943 cubic inches:

18 cups = 259.87499999943 cubic inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cubic inch is equal to 0.0038480038480123 × 18 cups.

Another way is saying that 18 cups is equal to 1 ÷ 0.0038480038480123 cubic inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that eighteen cups is approximately two hundred fifty-nine point eight seven five cubic inches:

18 cup ≅ 259.875 in3

An alternative is also that one cubic inch is approximately zero point zero zero four times eighteen cups.

Conversion table

cups to cubic inches chart

For quick reference purposes, below is the conversion table you can use to convert from cups to cubic inches