Forties to US Gallons Converter
Convert forties (40 fl oz) (forty) to US gallons (gal), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter an amount of beer, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 forty = 0.3125 gal
- 1 × 0.3125 = 0.3125 gal
How to convert forties to us gallons
1 forty = 0.3125 gal, so multiply by 0.3125 to go from forties (40 fl oz) to US gallons. Going the other way, 1 gal = 3.2 forty.
gal = forty × 0.3125 forty = gal × 3.2
Worked example:
1 forty = 0.3125 gal 5 × 0.3125 = 1.5625 gal
Forties to us gallons table
| Forties | US Gallons |
|---|---|
| 1 forty | 0.3125 gal |
| 2 forty | 0.625 gal |
| 3 forty | 0.9375 gal |
| 4 forty | 1.25 gal |
| 5 forty | 1.5625 gal |
| 6 forty | 1.875 gal |
| 7 forty | 2.1875 gal |
| 8 forty | 2.5 gal |
| 9 forty | 2.8125 gal |
| 10 forty | 3.125 gal |
| 15 forty | 4.6875 gal |
| 20 forty | 6.25 gal |
| 25 forty | 7.8125 gal |
| 30 forty | 9.375 gal |
| 40 forty | 12.5 gal |
| 50 forty | 15.625 gal |
| 75 forty | 23.4375 gal |
| 100 forty | 31.25 gal |
| 250 forty | 78.125 gal |
| 500 forty | 156.25 gal |
| 1000 forty | 312.5 gal |
About the units
- Forties (forty)
- Forties (40 fl oz), a US customary unit. Definition: Common US beer package sizes: 12 fl oz can or bottle, 22 fl oz bomber, 40 fl oz 'forty', 64 fl oz growler; kegs as fractions of the 31-gallon barrel.
- US Gallons (gal)
- US gallons, a US customary unit. Definition: NIST Handbook 44 Appendix C (US customary units; US gallon = 231 in³).
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