Forties Conversion

The forty is a unit used to measure beer volume. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about forties.

Forty Conversion Calculators

Choose a unit of beer volume to convert to.

Convert forties to beer barrels
1 forty is equal to 0.010081 beer barrels
Convert forties to beers
1 forty is equal to 3.333333 beers
Convert forties to bombers
1 forty is equal to 1.818182 bombers
Convert forties to cases
1 forty is equal to 0.138889 cases
Convert forties to gallons
1 forty is equal to 0.3125 gallons
Convert forties to growlers
1 forty is equal to 0.625 growlers
Convert forties to half barrel kegs
1 forty is equal to 0.020161 half barrel kegs
Convert forties to quarter barrel kegs
1 forty is equal to 0.040323 quarter barrel kegs
Convert forties to liters
1 forty is equal to 1.182942 liters
Convert forties to fluid ounces
1 forty is equal to 40 fluid ounces
Convert forties to pints
1 forty is equal to 2.5 pints
Convert forties to quarts
1 forty is equal to 1.25 quarts
Convert forties to six packs
1 forty is equal to 0.555556 six packs

Forty Definition and Usage

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.

Forties Measurement 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 12.5 0.403226 0.806452 23.65884 l 800 fl oz 50 pt 25 qt 11.111111

Unit of Measurement Conversion Made Easy!

There are thousands of units of measure in use across the globe, and converting from one to another can be very difficult since each conversion requires a different formula to derive the result. Our unit of measurement conversion tools are meant to be dead easy. We break the mold of the typical dry and complicated experience. In addition to converting from one measurement to another, we provide the formula so you can see how the conversion is done, use it on you’re own calculator if you need to!

Convert units of length, weight, volume, and area between imperial and metric measures

Understanding the Metric System

The metric system makes it relatively easy to convert from one metric unit to another metric unit. The metric system uses a base unit, think meters or grams, and a prefix such as kilo or milli. The prefixes differ from the base units by differing powers of 10. So to convert within the metric system it’s usually a matter of multiplying or dividing by one of the powers of 10.

Here is a list of some of the common metric prefixes:

  • “kilo” – 1,000x larger
  • “hecto” – 100x larger
  • “deca” – 10x larger
  • “deci” – 10x smaller
  • “centi” – 100x smaller
  • “milli” – 1,000x smaller

There is a helpful mnemonic for remembering the prefixes: “King Henry Died Until Drinking Chocolate Milk.”
The u in Until refers to the base unit.