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 387 fluid ounces into gallons we have to multiply 387 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

387 fl oz → V_(gal)

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

V_(gal) = 387 fl oz × 0.0078125 gal

V_(gal) = 3.0234375 gal

The final result is:

387 fl oz → 3.0234375 gal

We conclude that 387 fluid ounces is equivalent to 3.0234375 gallons:

387 fluid ounces = 3.0234375 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.33074935400517 × 387 fluid ounces.

Another way is saying that 387 fluid ounces is equal to 1 ÷ 0.33074935400517 gallons.

Approximate result

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

387 fl oz ≅ 3.023 gal

An alternative is also that one gallon is approximately zero point three three one times three hundred eighty-seven 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