How many ounces are in 27 cubic inches?

Answer 1

There is no equivalence.

An ounce is a measure of mass. A cubic inch is a measure of volume. The two measure different things and,according to basic principles of dimensional analysis, conversion from one to the other is not valid.

If you are not convinced, consider a cubic inch of air. How many ounces? Next consider a cubic inch of lead. How many ounces?

The masses of equal volumes of the two substances will clearly be very different. So there is no direct conversion between mass and volume: you need to know the density of the substance to enable you to carry out the conversion.

Answer 2

7.3 cubic inches is equal to 4.045021645 ounces.

Answer 3

1 oz = 1.8046875 cubic inches

27 cubic inches x 1oz/1.8046875 cubic inches = 15 ounces (rounded to two significant figures)