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 81.5 gallons into cups we have to multiply 81.5 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

81.5 gal → V_(cup)

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

V_(cup) = 81.5 gal × 16 cup

V_(cup) = 1304 cup

The final result is:

81.5 gal → 1304 cup

We conclude that 81.5 gallons is equivalent to 1304 cups:

81.5 gallons = 1304 cups

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cup is equal to 0.00076687116564417 × 81.5 gallons.

Another way is saying that 81.5 gallons is equal to 1 ÷ 0.00076687116564417 cups.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that eighty-one point five gallons is approximately one thousand three hundred four cups:

81.5 gal ≅ 1304 cup

An alternative is also that one cup is approximately zero point zero zero one times eighty-one point five 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