Convert Forties of Beer to Gallons

Enter the beer volume in forties below to get the value converted to gallons.

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1 forty = 0.3125 gallons
Do you want to convert gallons to forties?

How to Convert Forties to Gallons

To convert a forty measurement to a gallon measurement, multiply the beer volume by the conversion ratio.

Since one forty is equal to 0.3125 gallons, you can use this simple formula to convert:

gallons = forties × 0.3125

The beer volume in gallons is equal to the forties multiplied by 0.3125.

For example, here's how to convert 5 forties to gallons using the formula above.
5 forties = (5 × 0.3125) = 1.5625 gallons

Forties and gallons are both units used to measure beer volume. Keep reading to learn more about each unit of measure.

Forties

The forty is a US standard size bottle containing a 40 fl. oz. of beer. This size bottle is commonly associated with lower quality beer, but that is not always the case.

The forty is a US customary unit of beer volume.

Gallons

The US gallon is a standard size equivalent to 128 fl. oz. of beer.

The gallon is a US customary unit of beer volume.

Forty to Gallon Conversion Table

Forty measurements converted to gallons
Forties Gallons
1 0.3125
2 0.625
3 0.9375
4 1.25
5 1.5625
6 1.875
7 2.1875
8 2.5
9 2.8125
10 3.125
11 3.4375
12 3.75
13 4.0625
14 4.375
15 4.6875
16 5
17 5.3125
18 5.625
19 5.9375
20 6.25
21 6.5625
22 6.875
23 7.1875
24 7.5
25 7.8125
26 8.125
27 8.4375
28 8.75
29 9.0625
30 9.375
31 9.6875
32 10
33 10.31
34 10.63
35 10.94
36 11.25
37 11.56
38 11.88
39 12.19
40 12.5

More Forty & Gallon Conversions