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 258 cubic inches into gallons we have to multiply 258 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

258 in3 → V_(gal)

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

V_(gal) = 258 in3 × 0.0043290043290138 gal

V_(gal) = 1.1168831168856 gal

The final result is:

258 in3 → 1.1168831168856 gal

We conclude that 258 cubic inches is equivalent to 1.1168831168856 gallons:

258 cubic inches = 1.1168831168856 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.89534883720734 × 258 cubic inches.

Another way is saying that 258 cubic inches is equal to 1 ÷ 0.89534883720734 gallons.

Approximate result

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

258 in3 ≅ 1.117 gal

An alternative is also that one gallon is approximately zero point eight nine five times two hundred fifty-eight 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