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 1421 cubic inches into gallons we have to multiply 1421 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

1421 in3 → V_(gal)

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

V_(gal) = 1421 in3 × 0.0043290043290138 gal

V_(gal) = 6.1515151515286 gal

The final result is:

1421 in3 → 6.1515151515286 gal

We conclude that 1421 cubic inches is equivalent to 6.1515151515286 gallons:

1421 cubic inches = 6.1515151515286 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.16256157635432 × 1421 cubic inches.

Another way is saying that 1421 cubic inches is equal to 1 ÷ 0.16256157635432 gallons.

Approximate result

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

1421 in3 ≅ 6.152 gal

An alternative is also that one gallon is approximately zero point one six three times one thousand four hundred twenty-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