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 397 cubic inches into gallons we have to multiply 397 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

397 in3 → V_(gal)

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

V_(gal) = 397 in3 × 0.0043290043290138 gal

V_(gal) = 1.7186147186185 gal

The final result is:

397 in3 → 1.7186147186185 gal

We conclude that 397 cubic inches is equivalent to 1.7186147186185 gallons:

397 cubic inches = 1.7186147186185 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.58186397984759 × 397 cubic inches.

Another way is saying that 397 cubic inches is equal to 1 ÷ 0.58186397984759 gallons.

Approximate result

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

397 in3 ≅ 1.719 gal

An alternative is also that one gallon is approximately zero point five eight two times three hundred ninety-seven 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