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 150 cubic inches into gallons we have to multiply 150 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

150 in3 → V_(gal)

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

V_(gal) = 150 in3 × 0.0043290043290138 gal

V_(gal) = 0.64935064935207 gal

The final result is:

150 in3 → 0.64935064935207 gal

We conclude that 150 cubic inches is equivalent to 0.64935064935207 gallons:

150 cubic inches = 0.64935064935207 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.5399999999966 × 150 cubic inches.

Another way is saying that 150 cubic inches is equal to 1 ÷ 1.5399999999966 gallons.

Approximate result

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

150 in3 ≅ 0.649 gal

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