Conversion formula

The conversion factor from cups to gallons is 0.0625, which means that 1 cup is equal to 0.0625 gallons:

1 cup = 0.0625 gal

To convert 45 cups into gallons we have to multiply 45 by the conversion factor in order to get the volume amount from cups to gallons. We can also form a simple proportion to calculate the result:

1 cup → 0.0625 gal

45 cup → V_(gal)

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

V_(gal) = 45 cup × 0.0625 gal

V_(gal) = 2.8125 gal

The final result is:

45 cup → 2.8125 gal

We conclude that 45 cups is equivalent to 2.8125 gallons:

45 cups = 2.8125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.35555555555556 × 45 cups.

Another way is saying that 45 cups is equal to 1 ÷ 0.35555555555556 gallons.

Approximate result

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

45 cup ≅ 2.813 gal

An alternative is also that one gallon is approximately zero point three five six times forty-five cups.

Conversion table

cups to gallons chart

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