Conversion formula

The conversion factor from tablespoons to cubic inches is 0.90234375000107, which means that 1 tablespoon is equal to 0.90234375000107 cubic inches:

1 tbsp = 0.90234375000107 in3

To convert 20 tablespoons into cubic inches we have to multiply 20 by the conversion factor in order to get the volume amount from tablespoons to cubic inches. We can also form a simple proportion to calculate the result:

1 tbsp → 0.90234375000107 in3

20 tbsp → V_(in3)

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

V_(in3) = 20 tbsp × 0.90234375000107 in3

V_(in3) = 18.046875000021 in3

The final result is:

20 tbsp → 18.046875000021 in3

We conclude that 20 tablespoons is equivalent to 18.046875000021 cubic inches:

20 tablespoons = 18.046875000021 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 0.05541125541119 × 20 tablespoons.

Another way is saying that 20 tablespoons is equal to 1 ÷ 0.05541125541119 cubic inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty tablespoons is approximately eighteen point zero four seven cubic inches:

20 tbsp ≅ 18.047 in3

An alternative is also that one cubic inch is approximately zero point zero five five times twenty tablespoons.

Conversion table

tablespoons to cubic inches chart

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