How Many Ounces (Oz or Fl Oz) Are in a Gallon?
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Conversion Formulas
When somebody asks how many ounces are in a gallon, note that a gallon is a unit of volume, hence the ounces are also 'fluid ounces' - very often labeled as 'fl oz'. Also, there are US Gallon, US Fluid Ounce, Imperial Gallon, and Imperial Fluid Ounce. Their relations are:
1 US Fluid Ounce (fl oz) = 1/128 US Liquid Gallon = 29.5735 milliliters
1 US Liquid Gallon = 128 US Fluid Ounces (fl oz) = 3.78541 liters
1 Imp Fluid Ounce = 1/160 Imp Liquid Gallon = 28.4131 milliliters
1 Imp Liquid Gallon = 160 Imp Fluid Ounces = 4.54609 liters
In order to convert volume given in gallons into volume given in ounces, use these formulas:
V(US fl oz) = 128 * V(US gallon)
V(Imp fl oz) = 160 * V(Imp gallon)
How Many Ounces Are in a Half Gallon of Water?
If You have a half gallons (US/Imp) of water, and want to know how many ounces is that, math is very simple:
V(US fl oz) = 128 * V(US gallon) = 128 * 0.5 = 64 US fl oz = 1892.7 ml = 1.8927 liters
V(Imp fl oz) = 160 * V(Imp gallon) = 160 * 0.5 = 80 Imp fl oz = 2273.0 ml = 2.273 liters
Similarly, if You have 2 gallons (US/Imp) that would be:
V(US fl oz) = 128 * V(US gallon) = 128 * 2 = 256 US fl oz = 7570.816 ml = 7.570816 liters
V(Imp fl oz) = 160 * V(Imp gallon) = 160 * 2 = 320 Imp fl oz = 9092.192 ml = 9.092192 liters
Ounces to Gallons and Gallons to Ounces Conversion Calculator
In order to convert ounces to gallons and gallons to ounces, feel free to use this conversion calculator - write the value that You have and click 'Calculate' to convert it:
US Fluid Ounces to US Gallons |
US Fluid Ounces: US Gallons: |
US Gallons to US Fluid Ounces |
US Gallons: US Fluid Ounces: |
Imperial Fluid Ounces to Imperial Gallons |
Imperial Fluid Ounces: Imperial Gallons: |
Imperial Gallons to Imperial Fluid Ounces |
Imperial Gallons: Imperial Fluid Ounces: |
Ounces to Gallons Conversion Charts
Here are some ounces to gallons quick conversion charts to aid You with units' conversions:
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For more values, please, use the conversion calculators.