# Forty Conversion Calculator

Enter a value in forties below to convert to another unit of beer volume.

## What Is a Forty?

A forty is a unit used to measure beer volume.

The forty is a US customary unit of beer volume.

## How Much Is a Forty of Beer?

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.

## How to Convert Forties

To convert forties to another unit of beer volume, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.[1]

You can find the conversion factors for forties in the conversion table below.

Then, multiply the beer volume measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

forties × conversion factor = result

You can also use a calculator, such as one of the converters below, for the conversion.

## Forty Conversion Table

Common forty values and equivalent imperial and metric beer volume measurements
forties beer barrels beers bombers cases gallons growlers half barrel kegs quarter barrel kegs liters fluid ounces pints quarts six packs
1 0.010081 bbl 3.333333 1.818182 0.138889 0.3125 gal 0.625 0.020161 0.040323 1.182942 l 40 fl oz 2.5 pt 1.25 qt 0.555556
2 0.020161 bbl 6.666667 3.636364 0.277778 0.625 gal 1.25 0.040323 0.080645 2.365884 l 80 fl oz 5 pt 2.5 qt 1.111111
3 0.030242 bbl 10 5.454545 0.416667 0.9375 gal 1.875 0.060484 0.120968 3.548826 l 120 fl oz 7.5 pt 3.75 qt 1.666667
4 0.040323 bbl 13.333333 7.272727 0.555556 1.25 gal 2.5 0.080645 0.16129 4.731768 l 160 fl oz 10 pt 5 qt 2.222222
5 0.050403 bbl 16.666667 9.090909 0.694444 1.5625 gal 3.125 0.100806 0.201613 5.91471 l 200 fl oz 12.5 pt 6.25 qt 2.777778
6 0.060484 bbl 20 10.909091 0.833333 1.875 gal 3.75 0.120968 0.241935 7.097652 l 240 fl oz 15 pt 7.5 qt 3.333333
7 0.070565 bbl 23.333333 12.727273 0.972222 2.1875 gal 4.375 0.141129 0.282258 8.280594 l 280 fl oz 17.5 pt 8.75 qt 3.888889
8 0.080645 bbl 26.666667 14.545455 1.111111 2.5 gal 5 0.16129 0.322581 9.463536 l 320 fl oz 20 pt 10 qt 4.444444
9 0.090726 bbl 30 16.363636 1.25 2.8125 gal 5.625 0.181452 0.362903 10.646478 l 360 fl oz 22.5 pt 11.25 qt 5
10 0.100806 bbl 33.333333 18.181818 1.388889 3.125 gal 6.25 0.201613 0.403226 11.82942 l 400 fl oz 25 pt 12.5 qt 5.555556
11 0.110887 bbl 36.666667 20 1.527778 3.4375 gal 6.875 0.221774 0.443548 13.012362 l 440 fl oz 27.5 pt 13.75 qt 6.111111
12 0.120968 bbl 40 21.818182 1.666667 3.75 gal 7.5 0.241935 0.483871 14.195304 l 480 fl oz 30 pt 15 qt 6.666667
13 0.131048 bbl 43.333333 23.636364 1.805556 4.0625 gal 8.125 0.262097 0.524194 15.378246 l 520 fl oz 32.5 pt 16.25 qt 7.222222
14 0.141129 bbl 46.666667 25.454545 1.944444 4.375 gal 8.75 0.282258 0.564516 16.561188 l 560 fl oz 35 pt 17.5 qt 7.777778
15 0.15121 bbl 50 27.272727 2.083333 4.6875 gal 9.375 0.302419 0.604839 17.74413 l 600 fl oz 37.5 pt 18.75 qt 8.333333
16 0.16129 bbl 53.333333 29.090909 2.222222 5 gal 10 0.322581 0.645161 18.927072 l 640 fl oz 40 pt 20 qt 8.888889
17 0.171371 bbl 56.666667 30.909091 2.361111 5.3125 gal 10.625 0.342742 0.685484 20.110014 l 680 fl oz 42.5 pt 21.25 qt 9.444444
18 0.181452 bbl 60 32.727273 2.5 5.625 gal 11.25 0.362903 0.725806 21.292956 l 720 fl oz 45 pt 22.5 qt 10
19 0.191532 bbl 63.333333 34.545455 2.638889 5.9375 gal 11.875 0.383065 0.766129 22.475898 l 760 fl oz 47.5 pt 23.75 qt 10.555556
20 0.201613 bbl 66.666667 36.363636 2.777778 6.25 gal 12.5 0.403226 0.806452 23.65884 l 800 fl oz 50 pt 25 qt 11.111111

## Forty Conversion Calculators

You can also convert beer volume using one of our forty converters below.

## References

1. National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion