## Conversion formula

The conversion factor from tablespoons to teaspoons is 3.0000000000122, which means that 1 tablespoon is equal to 3.0000000000122 teaspoons:

1 tbsp = 3.0000000000122 tsp

To convert 4.5 tablespoons into teaspoons we have to multiply 4.5 by the conversion factor in order to get the volume amount from tablespoons to teaspoons. We can also form a simple proportion to calculate the result:

1 tbsp → 3.0000000000122 tsp

4.5 tbsp → V(tsp)

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

V(tsp) = 4.5 tbsp × 3.0000000000122 tsp

V(tsp) = 13.500000000055 tsp

The final result is:

4.5 tbsp → 13.500000000055 tsp

We conclude that 4.5 tablespoons is equivalent to 13.500000000055 teaspoons:

4.5 tablespoons = 13.500000000055 teaspoons

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 teaspoon is equal to 0.074074074073774 × 4.5 tablespoons.

Another way is saying that 4.5 tablespoons is equal to 1 ÷ 0.074074074073774 teaspoons.

## Approximate result

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

4.5 tbsp ≅ 13.5 tsp

An alternative is also that one teaspoon is approximately zero point zero seven four times four point five tablespoons.

## Conversion table

### tablespoons to teaspoons chart

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

tablespoons (tbsp) teaspoons (tsp)
5.5 tablespoons 16.5 teaspoons
6.5 tablespoons 19.5 teaspoons
7.5 tablespoons 22.5 teaspoons
8.5 tablespoons 25.5 teaspoons
9.5 tablespoons 28.5 teaspoons
10.5 tablespoons 31.5 teaspoons
11.5 tablespoons 34.5 teaspoons
12.5 tablespoons 37.5 teaspoons
13.5 tablespoons 40.5 teaspoons
14.5 tablespoons 43.5 teaspoons