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Unit Converter

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 21.5 cups into gallons we have to multiply 21.5 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

21.5 cup → V(gal)

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

V(gal) = 21.5 cup × 0.0625 gal

V(gal) = 1.34375 gal

The final result is:

21.5 cup → 1.34375 gal

We conclude that 21.5 cups is equivalent to 1.34375 gallons:

21.5 cups = 1.34375 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.74418604651163 × 21.5 cups.

Another way is saying that 21.5 cups is equal to 1 ÷ 0.74418604651163 gallons.

Approximate result

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

21.5 cup ≅ 1.344 gal

An alternative is also that one gallon is approximately zero point seven four four times twenty-one point 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

cups (cup) gallons (gal)
22.5 cups 1.406 gallons
23.5 cups 1.469 gallons
24.5 cups 1.531 gallons
25.5 cups 1.594 gallons
26.5 cups 1.656 gallons
27.5 cups 1.719 gallons
28.5 cups 1.781 gallons
29.5 cups 1.844 gallons
30.5 cups 1.906 gallons
31.5 cups 1.969 gallons