## 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 108.5 cubic inches into gallons we have to multiply 108.5 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

108.5 in3 → V(gal)

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

V(gal) = 108.5 in3 × 0.0043290043290138 gal

V(gal) = 0.469696969698 gal

The final result is:

108.5 in3 → 0.469696969698 gal

We conclude that 108.5 cubic inches is equivalent to 0.469696969698 gallons:

108.5 cubic inches = 0.469696969698 gallons

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 2.1290322580598 × 108.5 cubic inches.

Another way is saying that 108.5 cubic inches is equal to 1 ÷ 2.1290322580598 gallons.

## Approximate result

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

108.5 in3 ≅ 0.47 gal

An alternative is also that one gallon is approximately two point one two nine times one hundred eight 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

cubic inches (in3) gallons (gal)
109.5 cubic inches 0.474 gallons
110.5 cubic inches 0.478 gallons
111.5 cubic inches 0.483 gallons
112.5 cubic inches 0.487 gallons
113.5 cubic inches 0.491 gallons
114.5 cubic inches 0.496 gallons
115.5 cubic inches 0.5 gallons
116.5 cubic inches 0.504 gallons
117.5 cubic inches 0.509 gallons
118.5 cubic inches 0.513 gallons