Conversion formula

The conversion factor from cubic inches to gallons is 0.0043290043290138, which means that 1 cubic inch is equal to 0.0043290043290138 gallons:

1 in3 = 0.0043290043290138 gal

To convert 521 cubic inches into gallons we have to multiply 521 by the conversion factor in order to get the volume amount from cubic inches to gallons. We can also form a simple proportion to calculate the result:

1 in3 → 0.0043290043290138 gal

521 in3 → V_(gal)

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

V_(gal) = 521 in3 × 0.0043290043290138 gal

V_(gal) = 2.2554112554162 gal

The final result is:

521 in3 → 2.2554112554162 gal

We conclude that 521 cubic inches is equivalent to 2.2554112554162 gallons:

521 cubic inches = 2.2554112554162 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.44337811900095 × 521 cubic inches.

Another way is saying that 521 cubic inches is equal to 1 ÷ 0.44337811900095 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that five hundred twenty-one cubic inches is approximately two point two five five gallons:

521 in3 ≅ 2.255 gal

An alternative is also that one gallon is approximately zero point four four three times five hundred twenty-one cubic inches.

Conversion table

cubic inches to gallons chart

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