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Unit Converter

Conversion formula

The conversion factor from gallons to fluid ounces is 128, which means that 1 gallon is equal to 128 fluid ounces:

1 gal = 128 fl oz

To convert 4.2 gallons into fluid ounces we have to multiply 4.2 by the conversion factor in order to get the volume amount from gallons to fluid ounces. We can also form a simple proportion to calculate the result:

1 gal → 128 fl oz

4.2 gal → V(fl oz)

Solve the above proportion to obtain the volume V in fluid ounces:

V(fl oz) = 4.2 gal × 128 fl oz

V(fl oz) = 537.6 fl oz

The final result is:

4.2 gal → 537.6 fl oz

We conclude that 4.2 gallons is equivalent to 537.6 fluid ounces:

4.2 gallons = 537.6 fluid ounces

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 fluid ounce is equal to 0.001860119047619 × 4.2 gallons.

Another way is saying that 4.2 gallons is equal to 1 ÷ 0.001860119047619 fluid ounces.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four point two gallons is approximately five hundred thirty-seven point six fluid ounces:

4.2 gal ≅ 537.6 fl oz

An alternative is also that one fluid ounce is approximately zero point zero zero two times four point two gallons.

Conversion table

gallons to fluid ounces chart

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

gallons (gal) fluid ounces (fl oz)
5.2 gallons 665.6 fluid ounces
6.2 gallons 793.6 fluid ounces
7.2 gallons 921.6 fluid ounces
8.2 gallons 1049.6 fluid ounces
9.2 gallons 1177.6 fluid ounces
10.2 gallons 1305.6 fluid ounces
11.2 gallons 1433.6 fluid ounces
12.2 gallons 1561.6 fluid ounces
13.2 gallons 1689.6 fluid ounces
14.2 gallons 1817.6 fluid ounces