Conversion formula

The conversion factor from fluid ounces to gallons is 0.0078125, which means that 1 fluid ounce is equal to 0.0078125 gallons:

1 fl oz = 0.0078125 gal

To convert 4020 fluid ounces into gallons we have to multiply 4020 by the conversion factor in order to get the volume amount from fluid ounces to gallons. We can also form a simple proportion to calculate the result:

1 fl oz → 0.0078125 gal

4020 fl oz → V_(gal)

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

V_(gal) = 4020 fl oz × 0.0078125 gal

V_(gal) = 31.40625 gal

The final result is:

4020 fl oz → 31.40625 gal

We conclude that 4020 fluid ounces is equivalent to 31.40625 gallons:

4020 fluid ounces = 31.40625 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.0318407960199 × 4020 fluid ounces.

Another way is saying that 4020 fluid ounces is equal to 1 ÷ 0.0318407960199 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four thousand twenty fluid ounces is approximately thirty-one point four zero six gallons:

4020 fl oz ≅ 31.406 gal

An alternative is also that one gallon is approximately zero point zero three two times four thousand twenty fluid ounces.

Conversion table

fluid ounces to gallons chart

For quick reference purposes, below is the conversion table you can use to convert from fluid ounces to gallons