Conversion formula

The conversion factor from teaspoons to cups is 0.020833333333319, which means that 1 teaspoon is equal to 0.020833333333319 cups:

1 tsp = 0.020833333333319 cup

To convert 390 teaspoons into cups we have to multiply 390 by the conversion factor in order to get the volume amount from teaspoons to cups. We can also form a simple proportion to calculate the result:

1 tsp → 0.020833333333319 cup

390 tsp → V_(cup)

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

V_(cup) = 390 tsp × 0.020833333333319 cup

V_(cup) = 8.1249999999945 cup

The final result is:

390 tsp → 8.1249999999945 cup

We conclude that 390 teaspoons is equivalent to 8.1249999999945 cups:

390 teaspoons = 8.1249999999945 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 0.12307692307701 × 390 teaspoons.

Another way is saying that 390 teaspoons is equal to 1 ÷ 0.12307692307701 cups.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three hundred ninety teaspoons is approximately eight point one two five cups:

390 tsp ≅ 8.125 cup

An alternative is also that one cup is approximately zero point one two three times three hundred ninety teaspoons.

Conversion table

teaspoons to cups chart

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