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 2.1 cups into gallons we have to multiply 2.1 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

2.1 cup → V_(gal)

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

V_(gal) = 2.1 cup × 0.0625 gal

V_(gal) = 0.13125 gal

The final result is:

2.1 cup → 0.13125 gal

We conclude that 2.1 cups is equivalent to 0.13125 gallons:

2.1 cups = 0.13125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 7.6190476190476 × 2.1 cups.

Another way is saying that 2.1 cups is equal to 1 ÷ 7.6190476190476 gallons.

Approximate result

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

2.1 cup ≅ 0.131 gal

An alternative is also that one gallon is approximately seven point six one nine times two point one 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