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 100.4 cubic inches into gallons we have to multiply 100.4 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

100.4 in3 → V_(gal)

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

V_(gal) = 100.4 in3 × 0.0043290043290138 gal

V_(gal) = 0.43463203463299 gal

The final result is:

100.4 in3 → 0.43463203463299 gal

We conclude that 100.4 cubic inches is equivalent to 0.43463203463299 gallons:

100.4 cubic inches = 0.43463203463299 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 2.300796812744 × 100.4 cubic inches.

Another way is saying that 100.4 cubic inches is equal to 1 ÷ 2.300796812744 gallons.

Approximate result

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

100.4 in3 ≅ 0.435 gal

An alternative is also that one gallon is approximately two point three zero one times one hundred point four 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