How big is a gallon of water?

Answer:

Presumably same as a gallon of any other liquid :-)

American gallon = 8 American pints = 3.785 litre
Imperial gallon = 8 Imperial pints = 4.546 litre

The difference comes from the fact that the American pint is 16 fluid ounces, while the Imperial pint is 20 fl. oz.

First answer by ID3459874567. Last edit by ID3459874567. Question popularity: 0 [recommend question].