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 631 cubic inches into gallons we have to multiply 631 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

631 in3 → V_(gal)

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

V_(gal) = 631 in3 × 0.0043290043290138 gal

V_(gal) = 2.7316017316077 gal

The final result is:

631 in3 → 2.7316017316077 gal

We conclude that 631 cubic inches is equivalent to 2.7316017316077 gallons:

631 cubic inches = 2.7316017316077 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.36608557844611 × 631 cubic inches.

Another way is saying that 631 cubic inches is equal to 1 ÷ 0.36608557844611 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred thirty-one cubic inches is approximately two point seven three two gallons:

631 in3 ≅ 2.732 gal

An alternative is also that one gallon is approximately zero point three six six times six hundred thirty-one 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