Conversion formula

The conversion factor from tablespoons to cups is 0.062500000000211, which means that 1 tablespoon is equal to 0.062500000000211 cups:

1 tbsp = 0.062500000000211 cup

To convert 6.4 tablespoons into cups we have to multiply 6.4 by the conversion factor in order to get the volume amount from tablespoons to cups. We can also form a simple proportion to calculate the result:

1 tbsp → 0.062500000000211 cup

6.4 tbsp → V_(cup)

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

V_(cup) = 6.4 tbsp × 0.062500000000211 cup

V_(cup) = 0.40000000000135 cup

The final result is:

6.4 tbsp → 0.40000000000135 cup

We conclude that 6.4 tablespoons is equivalent to 0.40000000000135 cups:

6.4 tablespoons = 0.40000000000135 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 2.4999999999915 × 6.4 tablespoons.

Another way is saying that 6.4 tablespoons is equal to 1 ÷ 2.4999999999915 cups.

Approximate result

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

6.4 tbsp ≅ 0.4 cup

An alternative is also that one cup is approximately two point five times six point four tablespoons.

Conversion table

tablespoons to cups chart

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