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 155.5 cubic inches into gallons we have to multiply 155.5 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

155.5 in3 → V_(gal)

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

V_(gal) = 155.5 in3 × 0.0043290043290138 gal

V_(gal) = 0.67316017316165 gal

The final result is:

155.5 in3 → 0.67316017316165 gal

We conclude that 155.5 cubic inches is equivalent to 0.67316017316165 gallons:

155.5 cubic inches = 0.67316017316165 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.4855305466205 × 155.5 cubic inches.

Another way is saying that 155.5 cubic inches is equal to 1 ÷ 1.4855305466205 gallons.

Approximate result

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

155.5 in3 ≅ 0.673 gal

An alternative is also that one gallon is approximately one point four eight six times one hundred fifty-five point five 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