Conversion formula

The conversion factor from gallons to cups is 16, which means that 1 gallon is equal to 16 cups:

1 gal = 16 cup

To convert 30.8 gallons into cups we have to multiply 30.8 by the conversion factor in order to get the volume amount from gallons to cups. We can also form a simple proportion to calculate the result:

1 gal → 16 cup

30.8 gal → V_(cup)

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

V_(cup) = 30.8 gal × 16 cup

V_(cup) = 492.8 cup

The final result is:

30.8 gal → 492.8 cup

We conclude that 30.8 gallons is equivalent to 492.8 cups:

30.8 gallons = 492.8 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 0.0020292207792208 × 30.8 gallons.

Another way is saying that 30.8 gallons is equal to 1 ÷ 0.0020292207792208 cups.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that thirty point eight gallons is approximately four hundred ninety-two point eight cups:

30.8 gal ≅ 492.8 cup

An alternative is also that one cup is approximately zero point zero zero two times thirty point eight gallons.

Conversion table

gallons to cups chart

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