Conversion formula

The conversion factor from cubic inches to fluid ounces is 0.55411255411377, which means that 1 cubic inch is equal to 0.55411255411377 fluid ounces:

1 in3 = 0.55411255411377 fl oz

To convert 720 cubic inches into fluid ounces we have to multiply 720 by the conversion factor in order to get the volume amount from cubic inches to fluid ounces. We can also form a simple proportion to calculate the result:

1 in3 → 0.55411255411377 fl oz

720 in3 → V_{(fl oz)}

Solve the above proportion to obtain the volume V in fluid ounces:

V_{(fl oz)} = 720 in3 × 0.55411255411377 fl oz

V_{(fl oz)} = 398.96103896191 fl oz

The final result is:

720 in3 → 398.96103896191 fl oz

We conclude that 720 cubic inches is equivalent to 398.96103896191 fluid ounces:

720 cubic inches = 398.96103896191 fluid ounces

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 fluid ounce is equal to 0.0025065104166612 × 720 cubic inches.

Another way is saying that 720 cubic inches is equal to 1 ÷ 0.0025065104166612 fluid ounces.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that seven hundred twenty cubic inches is approximately three hundred ninety-eight point nine six one fluid ounces:

720 in3 ≅ 398.961 fl oz

An alternative is also that one fluid ounce is approximately zero point zero zero three times seven hundred twenty cubic inches.

Conversion table

cubic inches to fluid ounces chart

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