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 20.5 teaspoons into cubic inches we have to multiply 20.5 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

20.5 tsp → V_(in3)

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

V_(in3) = 20.5 tsp × 0.30078124999914 in3

V_(in3) = 6.1660156249823 in3

The final result is:

20.5 tsp → 6.1660156249823 in3

We conclude that 20.5 teaspoons is equivalent to 6.1660156249823 cubic inches:

20.5 teaspoons = 6.1660156249823 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 0.16217928413097 × 20.5 teaspoons.

Another way is saying that 20.5 teaspoons is equal to 1 ÷ 0.16217928413097 cubic inches.

Approximate result

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

20.5 tsp ≅ 6.166 in3

An alternative is also that one cubic inch is approximately zero point one six two times twenty point five 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