1 gallon = 8 pints
Imperial:
1pt = 20fl oz
1 gallon = 8 x 20fl oz = 160fl oz
US:
1pt = 16fl oz
1 gallon = 8 x 16fl oz = 128fl oz
1 fl oz is the same in US and Imperial measurements.
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In UK there are 20 fl oz to the pint, so 1 gal = 160 fl oz.
In US there are 16 fl oz to the pint, so 1 gal = 128 fl oz.
128 fluid ounces per gallon.
There are 128 fluid ounces in one US gallon.
There are 128 fluid ounces in 1 US gallon. There are 160 fluid ounces in 1 UK gallon.
0.01 ounce
One fluid ounce equates to 0.0078125 gallon.
There are 9 fluid ounces in 1/18th of a gallon. To calculate this, you would first find how many fluid ounces are in a gallon (128 oz) and then divide by 18.