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 120 cubic inches into gallons we have to multiply 120 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

120 in3 → V_(gal)

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

V_(gal) = 120 in3 × 0.0043290043290138 gal

V_(gal) = 0.51948051948166 gal

The final result is:

120 in3 → 0.51948051948166 gal

We conclude that 120 cubic inches is equivalent to 0.51948051948166 gallons:

120 cubic inches = 0.51948051948166 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.9249999999958 × 120 cubic inches.

Another way is saying that 120 cubic inches is equal to 1 ÷ 1.9249999999958 gallons.

Approximate result

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

120 in3 ≅ 0.519 gal

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