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 4.5 teaspoons into cubic inches we have to multiply 4.5 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

4.5 tsp → V_(in3)

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

V_(in3) = 4.5 tsp × 0.30078124999914 in3

V_(in3) = 1.3535156249961 in3

The final result is:

4.5 tsp → 1.3535156249961 in3

We conclude that 4.5 teaspoons is equivalent to 1.3535156249961 cubic inches:

4.5 teaspoons = 1.3535156249961 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 0.73881673881886 × 4.5 teaspoons.

Another way is saying that 4.5 teaspoons is equal to 1 ÷ 0.73881673881886 cubic inches.

Approximate result

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

4.5 tsp ≅ 1.354 in3

An alternative is also that one cubic inch is approximately zero point seven three nine times four 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