ConvertOctopus Search

Unit Converter

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 40 fluid ounces into gallons we have to multiply 40 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

40 fl oz → V(gal)

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

V(gal) = 40 fl oz × 0.0078125 gal

V(gal) = 0.3125 gal

The final result is:

40 fl oz → 0.3125 gal

We conclude that 40 fluid ounces is equivalent to 0.3125 gallons:

40 fluid ounces = 0.3125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 3.2 × 40 fluid ounces.

Another way is saying that 40 fluid ounces is equal to 1 ÷ 3.2 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that forty fluid ounces is approximately zero point three one three gallons:

40 fl oz ≅ 0.313 gal

An alternative is also that one gallon is approximately three point two times forty 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

fluid ounces (fl oz) gallons (gal)
41 fluid ounces 0.32 gallons
42 fluid ounces 0.328 gallons
43 fluid ounces 0.336 gallons
44 fluid ounces 0.344 gallons
45 fluid ounces 0.352 gallons
46 fluid ounces 0.359 gallons
47 fluid ounces 0.367 gallons
48 fluid ounces 0.375 gallons
49 fluid ounces 0.383 gallons
50 fluid ounces 0.391 gallons