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 640 tablespoons into cups we have to multiply 640 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

640 tbsp → V_(cup)

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

V_(cup) = 640 tbsp × 0.062500000000211 cup

V_(cup) = 40.000000000135 cup

The final result is:

640 tbsp → 40.000000000135 cup

We conclude that 640 tablespoons is equivalent to 40.000000000135 cups:

640 tablespoons = 40.000000000135 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 0.024999999999915 × 640 tablespoons.

Another way is saying that 640 tablespoons is equal to 1 ÷ 0.024999999999915 cups.

Approximate result

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

640 tbsp ≅ 40 cup

An alternative is also that one cup is approximately zero point zero two five times six hundred forty 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