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 309.9 teaspoons into cups we have to multiply 309.9 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

309.9 tsp → V_(cup)

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

V_(cup) = 309.9 tsp × 0.020833333333319 cup

V_(cup) = 6.4562499999956 cup

The final result is:

309.9 tsp → 6.4562499999956 cup

We conclude that 309.9 teaspoons is equivalent to 6.4562499999956 cups:

309.9 teaspoons = 6.4562499999956 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 0.15488867376584 × 309.9 teaspoons.

Another way is saying that 309.9 teaspoons is equal to 1 ÷ 0.15488867376584 cups.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three hundred nine point nine teaspoons is approximately six point four five six cups:

309.9 tsp ≅ 6.456 cup

An alternative is also that one cup is approximately zero point one five five times three hundred nine point nine 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