## 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 490 cubic inches into gallons we have to multiply 490 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

490 in3 → V(gal)

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

V(gal) = 490 in3 × 0.0043290043290138 gal

V(gal) = 2.1212121212168 gal

The final result is:

490 in3 → 2.1212121212168 gal

We conclude that 490 cubic inches is equivalent to 2.1212121212168 gallons:

490 cubic inches = 2.1212121212168 gallons

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.47142857142754 × 490 cubic inches.

Another way is saying that 490 cubic inches is equal to 1 ÷ 0.47142857142754 gallons.

## Approximate result

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

490 in3 ≅ 2.121 gal

An alternative is also that one gallon is approximately zero point four seven one times four hundred ninety 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

cubic inches (in3) gallons (gal)
491 cubic inches 2.126 gallons
492 cubic inches 2.13 gallons
493 cubic inches 2.134 gallons
494 cubic inches 2.139 gallons
495 cubic inches 2.143 gallons
496 cubic inches 2.147 gallons
497 cubic inches 2.152 gallons
498 cubic inches 2.156 gallons
499 cubic inches 2.16 gallons
500 cubic inches 2.165 gallons