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 3.5 cubic inches into gallons we have to multiply 3.5 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

3.5 in3 → V_(gal)

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

V_(gal) = 3.5 in3 × 0.0043290043290138 gal

V_(gal) = 0.015151515151548 gal

The final result is:

3.5 in3 → 0.015151515151548 gal

We conclude that 3.5 cubic inches is equivalent to 0.015151515151548 gallons:

3.5 cubic inches = 0.015151515151548 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 65.999999999855 × 3.5 cubic inches.

Another way is saying that 3.5 cubic inches is equal to 1 ÷ 65.999999999855 gallons.

Approximate result

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

3.5 in3 ≅ 0.015 gal

An alternative is also that one gallon is approximately sixty-six times three 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