Conversion formula

The conversion factor from teaspoons to cubic inches is 0.30078124999914, which means that 1 teaspoon is equal to 0.30078124999914 cubic inches:

1 tsp = 0.30078124999914 in3

To convert 21 teaspoons into cubic inches we have to multiply 21 by the conversion factor in order to get the volume amount from teaspoons to cubic inches. We can also form a simple proportion to calculate the result:

1 tsp → 0.30078124999914 in3

21 tsp → V_(in3)

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

V_(in3) = 21 tsp × 0.30078124999914 in3

V_(in3) = 6.3164062499819 in3

The final result is:

21 tsp → 6.3164062499819 in3

We conclude that 21 teaspoons is equivalent to 6.3164062499819 cubic inches:

21 teaspoons = 6.3164062499819 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 0.15831787260404 × 21 teaspoons.

Another way is saying that 21 teaspoons is equal to 1 ÷ 0.15831787260404 cubic inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty-one teaspoons is approximately six point three one six cubic inches:

21 tsp ≅ 6.316 in3

An alternative is also that one cubic inch is approximately zero point one five eight times twenty-one teaspoons.

Conversion table

teaspoons to cubic inches chart

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