How many ounces in a gallon (Convert Oz to Gallons)
The conversion between gallons and ounces refers to fluid ounces and gallons. 1 gallon is equal to 128 ounces. Gallons and ounces are both imperial units of volume.
What is a fluid ounce?
Fluid ounces are a unit of volume for liquids. The symbol is fl.oz. Questions that often appear in homework generally refer to the conversion between US fluid ounces and gallons.
128 US fluid ounces = 1 US liquid gallon
1 US fluid ounce = 29.5735295625 milliliters
Avoirdupois ounce: unit of mass, abbreviated as oz.av.
1 ounce = 28.349523125 grams
1 ounce = 16 dram
1 ounce = 437.5 grains
16 ounces = 1 pound
Troy ounce: unit of mass, abbreviated as oz.tr (UK) and oz.t (US), commonly used in the measurement of precious metals such as gold and silver.
1 ounce = 480 g
1 ounce = 31.1034768 g
12 ounces = 1 pound
Apothecary ounce: unit of mass, same as troy ounce, abbreviated as ap oz.
1 ounce = 31.1034768 g
The formula
1 Gallon = 128 Ounces (fl.oz)
Table of convert gallon to ounce
Gallon | Ounces |
0.125 gal（1/8 gallon) | 16 fl.oz |
0.25 gal (1/4 gallon) | 32 fl.oz |
0.5 gal (1/2 gallon) | 64 fl.oz |
1 gal | 128 fl.oz |
1.5 gal | 192 fl.oz |
2 gal | 256 fl.oz |
2.5 gal | 320 fl.oz |
3 gal | 384 fl.oz |
3.5 gal | 448 fl.oz |
4 gal | 512 fl.oz |
4.5 gal | 576 fl.oz |
5 gal | 640 fl.oz |
10 gal | 1280 fl.oz |
20 gal | 2560 fl.oz |
30 gal | 3840 fl.oz |
40 gal | 5120 fl.oz |
50 gal | 6400 fl.oz |
What is the imperial system?
A system of measurement used in English-speaking countries such as the UK and the US is called the imperial system. The main unit of length is feet, the main unit of weight is pounds, the main unit of volume is gallons, and the unit of temperature is degrees Fahrenheit. British law stipulates that commercial retail must use the metric system; in the field of science, the British are accustomed to using the metric system, while Americans are accustomed to using the imperial system.
Imperial volume units
US gallon (US gal) : 1 US gallon = 3.785L = 4 US quarts
US quart (US quart) : 1 US quart = 0.946L = 2 US pints
US pint (US pint) : 1 US pint = 0.473L = 16 US fluid ounces
US fluid ounce (US fluid ounce) : 1 US fluid ounce = 0.029L
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