## Conversion formula

The conversion factor from cubic inches to teaspoons is 3.3246753246849, which means that 1 cubic inch is equal to 3.3246753246849 teaspoons:

1 in3 = 3.3246753246849 tsp

To convert 3.9 cubic inches into teaspoons we have to multiply 3.9 by the conversion factor in order to get the volume amount from cubic inches to teaspoons. We can also form a simple proportion to calculate the result:

1 in3 → 3.3246753246849 tsp

3.9 in3 → V(tsp)

Solve the above proportion to obtain the volume V in teaspoons:

V(tsp) = 3.9 in3 × 3.3246753246849 tsp

V(tsp) = 12.966233766271 tsp

The final result is:

3.9 in3 → 12.966233766271 tsp

We conclude that 3.9 cubic inches is equivalent to 12.966233766271 teaspoons:

3.9 cubic inches = 12.966233766271 teaspoons

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 teaspoon is equal to 0.077123397435676 × 3.9 cubic inches.

Another way is saying that 3.9 cubic inches is equal to 1 ÷ 0.077123397435676 teaspoons.

## Approximate result

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

3.9 in3 ≅ 12.966 tsp

An alternative is also that one teaspoon is approximately zero point zero seven seven times three point nine cubic inches.

## Conversion table

### cubic inches to teaspoons chart

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

cubic inches (in3) teaspoons (tsp)
4.9 cubic inches 16.291 teaspoons
5.9 cubic inches 19.616 teaspoons
6.9 cubic inches 22.94 teaspoons
7.9 cubic inches 26.265 teaspoons
8.9 cubic inches 29.59 teaspoons
9.9 cubic inches 32.914 teaspoons
10.9 cubic inches 36.239 teaspoons
11.9 cubic inches 39.564 teaspoons
12.9 cubic inches 42.888 teaspoons
13.9 cubic inches 46.213 teaspoons