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 748 cubic inches into gallons we have to multiply 748 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

748 in3 → V_(gal)

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

V_(gal) = 748 in3 × 0.0043290043290138 gal

V_(gal) = 3.2380952381023 gal

The final result is:

748 in3 → 3.2380952381023 gal

We conclude that 748 cubic inches is equivalent to 3.2380952381023 gallons:

748 cubic inches = 3.2380952381023 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.30882352941109 × 748 cubic inches.

Another way is saying that 748 cubic inches is equal to 1 ÷ 0.30882352941109 gallons.

Approximate result

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

748 in3 ≅ 3.238 gal

An alternative is also that one gallon is approximately zero point three zero nine times seven hundred forty-eight 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