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 1521 cubic inches into gallons we have to multiply 1521 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

1521 in3 → V_(gal)

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

V_(gal) = 1521 in3 × 0.0043290043290138 gal

V_(gal) = 6.58441558443 gal

The final result is:

1521 in3 → 6.58441558443 gal

We conclude that 1521 cubic inches is equivalent to 6.58441558443 gallons:

1521 cubic inches = 6.58441558443 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.15187376725805 × 1521 cubic inches.

Another way is saying that 1521 cubic inches is equal to 1 ÷ 0.15187376725805 gallons.

Approximate result

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

1521 in3 ≅ 6.584 gal

An alternative is also that one gallon is approximately zero point one five two times one thousand 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